From the Cross to the Western World

How Christianity Traveled from Jerusalem to Rome and Beyond

Primary biblical text: 1 Corinthians 1:18–31
Supporting text: Acts 1:8
Estimated reading time: 25–30 minutes
Central theme: Christianity did not spread from Jerusalem across the Roman world because it possessed political power, cultural prestige, military force, or philosophical superiority. It spread through the proclamation of the crucified and risen Christ, carried by ordinary believers across the roads, ports, cities, languages, and cultures of the ancient world.

Introduction — An Unlikely Beginning

From the standpoint of ordinary human history, Christianity began in an unlikely place, with an unlikely message, led by unlikely people.

It did not begin in Rome, the political center of the Mediterranean world.

It did not begin in Athens, the great symbol of Greek philosophy.

It did not begin in Alexandria, one of the ancient world’s great intellectual centers.

It began in Judea, on the eastern edge of the Roman Empire.

Its central figure was a Jewish teacher from Galilee.

Its defining event was his execution by crucifixion.

Its first witnesses were not emperors, senators, philosophers, or generals. They were disciples, fishermen, tradespeople, women, travelers, artisans, and members of small house churches.

Yet within several generations Christian communities could be found across much of the Mediterranean world.

The movement traveled:

Jerusalem → Judea → Samaria → Syria → Asia Minor → Macedonia → Greece → Rome → farther west

At the same time, Christianity traveled in other directions:

Egypt → North Africa → Mesopotamia → Persia → eventually India, Central Asia, and beyond.

This distinction matters.

Christianity eventually became enormously influential in Europe and what came to be called the Western world, but Christianity was not originally Western.

It was born within Jewish life in the eastern Mediterranean.

Its Scriptures arose from Israel.

Jesus was Jewish.

The apostles were Jewish.

The first church was in Jerusalem.

The Christian movement became geographically and culturally diverse long before it became identified with European civilization.

Acts gives us the geographical program:

“You will be my witnesses in Jerusalem and in all Judea and Samaria, and to the end of the earth.”
— Acts 1:8

First Corinthians gives us the theological explanation:

“The word of the cross is folly to those who are perishing, but to us who are being saved it is the power of God.”
— 1 Corinthians 1:18

The story of Christianity’s expansion is therefore not merely the story of roads, ships, cities, empires, and missionaries.

It is the story of the message of the cross moving through them.

1. The Primary Text — 1 Corinthians 1:18–31

Paul writes:

“For the word of the cross is folly to those who are perishing, but to us who are being saved it is the power of God.”
— 1 Corinthians 1:18

That statement gives us a striking starting point for understanding the expansion of Christianity.

The message Christians carried across the Roman Empire centered upon a man who had been crucified.

To modern readers, the familiarity of the cross can hide how extraordinary that was.

The cross has become:

A church symbol
Jewelry
Artwork
Architecture
A marker of Christian identity

In Paul’s world, crucifixion represented:

Shame
Humiliation
Defeat
Political power
Public degradation
Death

Rome did not crucify people to make them heroes.

Crucifixion demonstrated what happened to people whom Roman authority could destroy.

Yet Christians announced:

The crucified Jesus is Lord.

And more astonishingly:

His cross is God’s saving power.

2. Who Wrote 1 Corinthians?

The apostle Paul wrote 1 Corinthians.

The letter begins:

“Paul, called by the will of God to be an apostle of Christ Jesus.”
— 1 Corinthians 1:1

Pauline authorship is accepted across the overwhelming range of New Testament scholarship.

Paul had personally established the Christian community at Corinth during his missionary activity described in Acts 18.

3. When and Where Was 1 Corinthians Written?

Paul probably wrote 1 Corinthians around AD 53–55, most likely while residing in Ephesus.

Near the end of the letter he writes:

“I will stay in Ephesus until Pentecost.”
— 1 Corinthians 16:8

This fits the period of Paul’s extended ministry in Ephesus described in Acts 19.

Paul was therefore writing from one major Greco-Roman city to Christians living in another.

That itself illustrates how Christianity had already traveled.

The message that began in Jerusalem was now being discussed between Christian communities hundreds of miles apart across the eastern Mediterranean.

4. Corinth — Where the Jewish Gospel Met the Greco-Roman World

Corinth was strategically located in southern Greece.

It stood near the narrow isthmus connecting northern and southern Greece and possessed access to important maritime routes.

Roman Corinth was also a colony and an important commercial center.

Its population included people from varied social and ethnic backgrounds.

The Christian congregation likewise contained people of differing:

Social status
Economic circumstances
Ethnic backgrounds
Educational levels

Paul’s letter reveals a church fascinated by questions of:

Wisdom
Status
Leadership
Spiritual gifts
Social distinction

Some Christians were identifying themselves with particular teachers:

“I follow Paul.”

“I follow Apollos.”

“I follow Cephas.”

Paul’s answer is startling:

“Was Paul crucified for you?”
— 1 Corinthians 1:13

The Church was not to reproduce the ancient world’s competition for honor and prestige.

Its center was the cross.

5. “The Word of the Cross”

The Greek expression translated “the word of the cross” is:

ὁ λόγος ὁ τοῦ σταυροῦ — ho logos ho tou staurou

It means the message, proclamation, or word concerning the cross.

Paul does not say merely:

The cross happened.

He says that the message of the cross possesses saving significance.

The crucifixion must therefore be:

Remembered
Explained
Proclaimed
Interpreted

The earliest Christians did not travel around the Roman Empire merely teaching general moral principles.

They proclaimed an event:

Jesus Christ was crucified.

And another event:

God raised him from the dead.

The Christian movement was therefore fundamentally a proclamation before it became a civilization.

6. “Folly” to the Ancient World

Paul writes:

“The word of the cross is folly to those who are perishing.”

The Greek word is μωρία — mōria.

It can mean:

Foolishness
Absurdity
Nonsense

The English word moron ultimately derives from the same Greek word family.

Why would the cross sound foolish?

Because the claim reversed ordinary expectations about power.

People expected power to look like:

Military victory
Wealth
Political authority
Eloquence
Noble birth
Philosophical brilliance

Christianity proclaimed God’s decisive victory through an executed Messiah.

Paul therefore writes:

“We preach Christ crucified, a stumbling block to Jews and folly to Gentiles.”
— 1 Corinthians 1:23

7. “A Stumbling Block to Jews”

The Greek word is:

σκάνδαλον — skandalon

It describes something that causes stumbling or offense.

Why would a crucified Messiah be difficult for Jewish hearers?

Messianic hope was associated with:

God’s kingdom
Israel’s restoration
Davidic kingship
Justice
Victory
Deliverance

Yet Jesus had been executed by Rome.

Deuteronomy also states:

“A hanged man is cursed by God.”
— Deuteronomy 21:23

Paul himself recognizes this difficulty in Galatians:

“Christ redeemed us from the curse of the law by becoming a curse for us.”
— Galatians 3:13

Christian proclamation therefore made an extraordinary claim:

The apparent curse had become the means through which God dealt with the curse of sin.

The apparent defeat of the Messiah was God’s saving victory.

8. “Folly to Gentiles”

Greek and Roman hearers faced a different problem.

A crucified Savior challenged assumptions about:

Honor
Divinity
Power
Wisdom
Social hierarchy

The idea that God’s supreme revelation had occurred through an executed provincial Jew could appear absurd.

Yet Paul refuses to replace the cross with a message more acceptable to the surrounding culture.

“We preach Christ crucified.”

This becomes fundamental to our study.

Christianity did adapt its language and cultural expression as it moved across cultures.

But its central proclamation could not simply be altered to match what every culture already considered reasonable.

9. The Power of God

Paul continues:

“To those who are called, both Jews and Greeks, Christ the power of God and the wisdom of God.”
— 1 Corinthians 1:24

Notice Paul’s universality:

Jews and Greeks.

These two categories could function broadly for the Jewish people and the Gentile world.

The same Christ is proclaimed to both.

There is not:

One Jewish Savior
Another Greek Savior
Another Roman Savior

The gospel crosses cultures because its center transcends them.

The Church must communicate within culture.

But Christ does not belong exclusively to any one culture.

10. God’s Foolishness and Human Wisdom

Paul writes:

“The foolishness of God is wiser than men, and the weakness of God is stronger than men.”
— 1 Corinthians 1:25

Paul does not actually believe God is foolish or weak.

He is speaking rhetorically.

What appears foolish by ordinary standards reveals a wisdom deeper than human wisdom.

What appears weak reveals divine power.

This theme helps explain Christianity’s earliest expansion.

The Christian mission did not begin with:

Government sponsorship
Armies
Enormous financial resources
Educational institutions
Political influence

It began with witness.

11. “Consider Your Calling”

Paul tells the Corinthians:

“Not many of you were wise according to worldly standards, not many were powerful, not many were of noble birth.”
— 1 Corinthians 1:26

Paul does not say none were socially prominent.

Some early Christians possessed wealth, education, property, or civic standing.

But Christianity was not initially a movement dependent upon the governing elite.

Paul emphasizes ordinary people.

That matters for the historical spread of Christianity.

The gospel traveled not only through famous apostles.

It traveled through:

Families
Merchants
Artisans
Women
Travelers
Migrants
Household networks
Enslaved and formerly enslaved people
Local teachers
Unknown believers

Modern research into early Christian diffusion likewise emphasizes the importance of networks, cities, transportation routes, and ordinary social relationships rather than imagining expansion as the work of a handful of famous missionaries alone. (PubMed Central (PMC))

12. Why Did God Choose the Weak?

Paul explains:

“God chose what is weak in the world to shame the strong.”

And:

“So that no human being might boast in the presence of God.”

The gospel undermines human boasting.

No civilization can say:

We invented Christianity because we were wiser.

No nation can say:

Christ belongs uniquely to us because we were morally superior.

No class can say:

God chose us because we were powerful.

The gospel begins with grace.

That principle becomes extremely important once Christianity later gains cultural and political power.

13. Acts 1:8 — The Geographic Program

Before his ascension, Jesus tells his disciples:

“You will receive power when the Holy Spirit has come upon you, and you will be my witnesses in Jerusalem and in all Judea and Samaria, and to the end of the earth.”

Acts 1:8 functions almost as a geographical outline for the book of Acts.

Jerusalem

Acts 1–7

Judea and Samaria

Acts 8–12

Toward the Ends of the Earth

Acts 13–28

And where does Acts end?

Rome.

Luke therefore takes his readers symbolically from:

Jerusalem to the capital of the empire.

The gospel begins in a Jewish setting and reaches the political center of the Mediterranean world.

Cambridge’s history of early Christianity similarly identifies Acts 1:8 and Paul’s own westward missionary ambitions in Romans 15 as important expressions of Christianity’s outward geographical movement from Jerusalem across the Mediterranean. (Cambridge University Press)

14. Jerusalem — The Beginning

Christianity began in Jerusalem.

According to Acts, the disciples waited there after Jesus’ ascension.

At Pentecost the Holy Spirit came upon them.

Peter proclaimed:

Jesus’ crucifixion
His resurrection
His exaltation
The call to repentance

Acts describes thousands responding.

The first Christian community was therefore entirely or overwhelmingly Jewish.

The believers:

Read Israel’s Scriptures
Worshiped Israel’s God
Visited the temple
Practiced Jewish patterns of prayer
Understood Jesus as Israel’s Messiah

Christianity did not begin as a rejection of Judaism.

It began as the claim that Israel’s God had fulfilled his promises through Israel’s Messiah.

15. Pentecost and the First International Audience

Acts 2 lists Jewish pilgrims from numerous regions.

They came from areas associated with:

Mesopotamia
Judea
Cappadocia
Pontus
Asia
Phrygia
Pamphylia
Egypt
Libya
Rome
Crete
Arabia

Pentecost therefore already anticipates the outward movement.

The gospel is proclaimed in Jerusalem, but the audience represents a much wider world.

The movement toward Rome did not begin only when Paul boarded a ship.

Networks connecting Jerusalem with diaspora Jewish communities already existed.

16. The Jewish Diaspora — Roads Already Prepared

Long before Christianity appeared, Jewish communities existed throughout much of the Mediterranean and Near Eastern worlds.

They had:

Synagogues
Scriptures
Communities
Teachers
Networks of travel
Relationships with Gentile sympathizers

This became enormously important for Christian mission.

Paul repeatedly entered a new city and began in the synagogue.

Why?

Because there he found people who already knew:

Abraham
Moses
The prophets
Creation
Covenant
Messianic expectation
Israel’s God

Christian missionaries therefore did not enter the Mediterranean world without any conceptual bridge.

The Jewish diaspora had already carried Israel’s Scriptures and monotheistic faith far beyond Judea. Historians have long recognized diaspora Judaism as one significant context facilitating Christianity’s subsequent expansion. (Christian Classics Ethereal Library)

17. The Septuagint — Scripture in Greek

Another major development preceded Christianity.

The Hebrew Scriptures had been translated into Greek.

This translation is commonly called the Septuagint, often abbreviated LXX.

Greek-speaking Jews throughout the Mediterranean could therefore encounter Israel’s Scriptures in the major international language of the eastern Roman world.

The New Testament writers frequently quote forms of Old Testament passages corresponding closely to the Septuagint.

This meant that Christian missionaries could proclaim:

Abraham
Isaiah
David
The Psalms
The prophets
Messianic promises

in Greek.

The gospel’s Jewish theological vocabulary had already crossed a major linguistic boundary before the apostles began their Gentile mission.

18. Greek — A Language That Crossed Borders

Alexander the Great’s conquests had spread Greek language and culture centuries before Christianity.

By the Roman period, Koine Greek functioned widely as a shared language across the eastern Mediterranean and beyond.

The New Testament itself was written in Greek.

That mattered enormously.

A message originating among Aramaic-speaking Jews could be communicated across:

Syria
Asia Minor
Greece
Rome
Other Mediterranean communities

Christianity displayed considerable linguistic adaptability from its earliest period; scholarship notes that the early movement moved quickly from its Aramaic setting into Greek, which gave it access to an enormously wider Mediterranean audience. (OUP Academic)

Language did not create the gospel.

But language provided a vehicle through which the gospel could travel.

19. Persecution Moves the Gospel

Acts contains an irony.

Opposition intended to suppress Christianity sometimes helped spread it.

After Stephen’s death:

“There arose on that day a great persecution against the church in Jerusalem.”

Believers were scattered.

Then Acts says:

“Those who were scattered went about preaching the word.”
— Acts 8:4

The persecutors scattered Christians.

The Christians carried the gospel with them.

God did not require persecution in order to accomplish mission.

But Acts portrays God working even through hostile circumstances.

The Church moved outward not simply because of a carefully designed missionary organization but sometimes because ordinary Christians found themselves displaced.

20. Samaria — Crossing an Ancient Boundary

Philip traveled to Samaria.

This was significant because relations between Jews and Samaritans were marked by centuries of religious and ethnic tension.

Jesus had already crossed this boundary in John 4.

Acts now shows the Christian mission doing the same.

The movement from:

Jerusalem → Samaria

was therefore more than geography.

It represented the gospel crossing a boundary of inherited hostility.

Acts 1:8 was beginning to unfold.

21. The Ethiopian Official — Southward

Acts 8 then describes Philip’s encounter with an Ethiopian official.

The man had traveled to Jerusalem to worship and was reading Isaiah.

Philip explained the passage in relation to Jesus.

The official was baptized and continued on his journey.

The narrative reminds us that Christianity’s expansion did not move only westward.

Even within Acts, the gospel is already moving toward Africa.

The eventual history of African Christianity would become ancient and extensive.

22. Cornelius — The Gentile Threshold

Acts 10 describes one of Christianity’s decisive transitions.

Cornelius was:

A Gentile
A Roman centurion
God-fearing
Generous
Prayerful

Peter was led to enter his household.

The Holy Spirit came upon Gentiles.

Peter concluded:

“Truly I understand that God shows no partiality.”
— Acts 10:34

This was revolutionary.

Gentiles did not first have to become ethnically Jewish before receiving the Holy Spirit.

The mission could now move across the Gentile world without requiring conversion to Jewish ethnicity.

23. Antioch — The Great Missionary Turning Point

Antioch in Syria became one of the most important cities in early Christianity.

Believers scattered by persecution reached the city.

Some began preaching Jesus not only to Jews but also to Greeks.

Acts reports:

“The hand of the Lord was with them, and a great number who believed turned to the Lord.”
— Acts 11:21

Barnabas came from Jerusalem.

He brought Saul—Paul—to Antioch.

Acts then tells us:

“In Antioch the disciples were first called Christians.”
— Acts 11:26

Jerusalem remained profoundly important.

But Antioch became a major missionary center.

From Antioch, Paul and Barnabas were sent outward.

24. Paul — Apostle to the Gentiles

Paul was unusually equipped for cross-cultural mission.

He was:

Jewish
Educated in Jewish Scripture
From Tarsus
Familiar with Greek-speaking culture
A Roman citizen
Able to operate across several cultural worlds

But Paul did not attribute the success of his mission primarily to these advantages.

He writes:

“By the grace of God I am what I am.”
— 1 Corinthians 15:10

His mission illustrates both sides of Christian expansion:

Providential circumstances mattered.

And:

The gospel remained the power at the center.

25. Paul’s Missionary Strategy

Acts reveals a recognizable pattern.

Paul often traveled to important population centers.

Among them were:

Antioch
Philippi
Thessalonica
Corinth
Ephesus

He commonly began with Jewish communities and then engaged Gentiles.

Christian communities then became local centers from which the gospel spread further.

This is important.

Paul did not personally evangelize every village in the Roman Empire.

He helped establish communities that themselves became witnesses.

Christian expansion therefore worked through networks of communities, not simply through the travels of one apostle.

Modern spatial studies likewise find that transportation networks and larger population centers were significant factors in the early diffusion of Christianity, though historians caution against reducing early Christianity to an exclusively urban movement. (PubMed Central (PMC))

26. Roman Roads — Infrastructure without Roman Sponsorship

The Roman Empire maintained extensive systems of roads.

These were built primarily for:

Military movement
Government
Administration
Trade

They were not built to spread Christianity.

Yet Christian travelers used them.

Here we encounter an important historical principle:

The Roman Empire unintentionally provided infrastructure that Christian missionaries could use.

Roads connected:

Cities
Provinces
Markets
Ports
Administrative centers

Christianity traveled along the same routes as:

Merchants
Officials
Soldiers
Letters
Goods
Travelers

The empire did not create the message.

But the interconnected Mediterranean world helped the message travel.

27. The Mediterranean Sea — Christianity Traveled by Ship

Paul’s journeys remind us that ancient Christianity was also a maritime movement.

Acts repeatedly mentions:

Ports
Ships
Sailing seasons
Sea voyages
Storms
Harbor cities

Paul traveled through places such as:

Caesarea
Troas
Ephesus
Corinth’s port region
Malta
Puteoli

The Mediterranean was not merely a barrier separating lands.

It was also a transportation system joining them.

Christianity spread around a network of coastal cities connected by sea.

28. The Roman Peace — With Qualifications

The expression Pax Romana, or Roman Peace, describes the relative political stability that characterized significant portions of the Roman imperial period.

This stability could facilitate:

Trade
Travel
Communication
Administration

But “Roman peace” should not be romanticized.

Rome maintained order through:

Military force
Taxation
Slavery
Political domination
Harsh punishment

The cross itself was a Roman instrument of terror.

Christianity therefore traveled through Roman order while simultaneously proclaiming a Lord who had been executed by Roman authority.

That creates one of history’s great ironies:

Rome’s infrastructure helped spread the proclamation that the crucified Jesus—not Caesar—is Lord.

29. Macedonia — Christianity Crosses into Europe

Acts 16 describes Paul’s movement into Macedonia.

The narrative presents this as a significant geographical transition.

At Philippi, Paul encounters Lydia, a merchant dealing in purple goods.

Acts says:

“The Lord opened her heart to pay attention to what was said by Paul.”
— Acts 16:14

She and her household were baptized.

Her home then became a place of Christian fellowship.

Once again Christianity spreads through:

Personal encounter
Household
Hospitality
Local relationships

Philippi becomes an important Christian community.

Paul later writes to it from imprisonment.

30. Thessalonica and Berea

Paul then traveled through Macedonia.

At Thessalonica he reasoned from the Scriptures concerning the Messiah.

Some believed.

Opposition followed.

Paul and Silas moved to Berea.

Acts describes the Bereans:

“They received the word with all eagerness, examining the Scriptures daily to see if these things were so.”
— Acts 17:11

This verse gives The Berean Bible Study Project its name and method.

The gospel was traveling rapidly.

But the appropriate response was not unquestioning acceptance.

It was:

Listen carefully. Examine Scripture. Determine whether the proclamation is true.

That remains the Berean principle today.

31. Athens — The Gospel Meets Greek Philosophy

Paul eventually arrived in Athens.

Here Christianity encountered one of the great symbols of Greek intellectual culture.

Paul spoke at the Areopagus.

He demonstrated remarkable cultural awareness.

He:

Observed Athenian religion
Referred to an altar
Quoted Greek poets
Began from concepts his audience understood

Yet he did not simply baptize Greek philosophy as Christianity.

He proclaimed:

One Creator
Human dependence upon God
Repentance
Judgment
Resurrection

The response was mixed.

Some mocked.

Some wanted to hear more.

Some believed.

Acts 17 illustrates contextualization without surrendering the gospel’s central claims.

32. Corinth — The Cross Confronts Status

Then Paul reached Corinth.

Here the message encountered a commercial Roman city deeply influenced by social competition and cultural prestige.

This is the community to which Paul later wrote:

“Jews demand signs and Greeks seek wisdom, but we preach Christ crucified.”
— 1 Corinthians 1:22–23

Corinth therefore becomes a crucial station in our journey.

Jerusalem gives us the first proclamation.

Antioch gives us the missionary launching point.

Athens shows engagement with philosophy.

Corinth shows the confrontation between the cross and the ancient world’s pursuit of status, wisdom, and honor.

33. Ephesus — A Regional Center

Paul later spent an extended period in Ephesus.

Ephesus was a major city of Roman Asia and a significant commercial and religious center.

Acts describes the influence of the temple of Artemis and the economic interests attached to it.

Paul’s preaching eventually generated opposition from people whose livelihood depended upon the Artemis cult.

The episode reveals something important.

Christianity was not merely adding another deity to the existing religious marketplace.

Its monotheistic claims challenged existing religious and economic structures.

Acts reports that the message spread widely through the surrounding province.

A strategically situated congregation could influence an entire region.

34. Rome — The Gospel Reaches the Imperial Center

The book of Acts eventually carries Paul to Rome.

Remarkably, he arrives not as a triumphant missionary celebrity but as a prisoner.

That is thoroughly consistent with the theology of 1 Corinthians 1.

The gospel reaches the capital through weakness.

Paul does not enter Rome commanding soldiers.

He enters under Roman guard.

Yet Acts ends with Paul:

“Proclaiming the kingdom of God and teaching about the Lord Jesus Christ with all boldness and without hindrance.”
— Acts 28:31

That is one of the great endings in Scripture.

Paul is confined.

The gospel is not.

35. Christianity Was Already in Rome

Paul did not establish the first Roman Christian congregation.

His Letter to the Romans demonstrates that Christian communities already existed there before his arrival.

Romans 16 names numerous believers.

Some probably gathered in separate house churches.

How did Christianity first reach Rome?

We cannot reconstruct the process with certainty.

Acts 2 mentions visitors from Rome at Pentecost.

Travelers, merchants, migrants, Jewish believers, and other Christians may have carried the gospel there.

The absence of a famous founding missionary is itself significant.

Christianity often spread anonymously.

Much of its history was made by people whose names were never preserved.

36. Peter, Paul, and Rome

Early Christian tradition associates both Peter and Paul with Rome.

Paul’s connection is especially well supported by Acts and his letters.

Early sources also associate Peter with ministry and martyrdom in Rome.

By the late first and second centuries, the Roman church had acquired considerable importance.

Its location in the imperial capital contributed to its influence.

Eventually the bishop of Rome would become one of Christianity’s most consequential ecclesiastical offices.

But that later development must not be projected backward into Acts.

The first-century Roman church began as a network of Christian believers living under imperial rule—not as the headquarters of a Christian empire.

37. From Greek Christianity toward Latin Christianity

An important fact is often overlooked:

Early Christianity in Rome was substantially Greek-speaking.

The Letter to the Romans itself was written in Greek.

Much early Christian writing connected with Rome was also Greek.

Christianity therefore did not arrive in Rome already packaged as Latin Western Christianity.

The movement gradually became increasingly Latin-speaking in the western provinces.

Recent scholarship emphasizes this early linguistic flexibility: Christianity moved from its Aramaic Jewish setting into Greek before Latin eventually became dominant in much of Western Christianity. (OUP Academic)

This helps us see the transformation:

Jewish and Aramaic setting → Greek-speaking Mediterranean Christianity → increasingly Latin Western Christianity

That transition occurred over generations.

38. Beyond Rome — Toward the Western World

Rome became an important gateway for Christianity’s expansion farther west.

Christian communities eventually appeared in:

Italy
Gaul
North Africa
Spain
Britain
Germanic territories

By the late second century, well-attested Christian communities existed at places such as Lyon and Vienne in Gaul and in Roman North Africa. Evidence from this period also demonstrates that early Western Christianity remained closely connected with Christians originating in the Greek-speaking East. (OUP Academic)

Christianity would eventually become deeply intertwined with European civilization.

But that was a later historical development.

The gospel first reached Europe as a foreign message from the eastern Mediterranean.

39. Christianity Also Moved South

A journey “from Jerusalem to Rome” can create a misleading picture unless another direction is remembered.

Christianity also flourished very early in Egypt and North Africa.

Alexandria became one of ancient Christianity’s most important centers of:

Biblical interpretation
Theology
Education

North Africa later produced influential Christians including:

Tertullian
Cyprian
Augustine

Augustine was not a medieval European theologian.

He was a North African bishop.

African Christianity belongs near the center—not the margins—of early Christian history.

40. Christianity Also Moved East

The gospel also traveled beyond the Roman Empire.

Christianity developed in:

Syria
Mesopotamia
Persia

Later eastern Christians traveled into:

India
Central Asia
China

Syriac Christianity became one of Christianity’s great ancient intellectual and missionary traditions.

Therefore the phrase “Christianity moved westward” is true.

The statement “Christianity became Western because it naturally belonged to Europe” is false.

The movement was geographically plural from an early period.

The historical literature on the first centuries accordingly treats the expansion from Jerusalem as spreading not merely toward Rome but into Asia Minor, Egypt, Syria, Mesopotamia, North Africa, Gaul, and other regions. (Cambridge University Press)

41. Was Christianity Spread by the Roman Empire?

Not initially.

This is an important chronological distinction.

During the apostolic period, the Roman Empire did not sponsor Christianity.

Roman officials:

Imprisoned Christians
Flogged missionaries
Executed Christians
Eventually persecuted Christian communities

Jesus himself had been crucified under Pontius Pilate.

Paul ultimately reached Rome as a prisoner.

Christianity’s first centuries therefore cannot be explained as imperial religious expansion.

Only in the fourth century did the political situation change dramatically with Constantine and subsequent emperors.

42. Constantine Changed the Relationship

In the early fourth century, Christianity moved from persecuted religion toward imperial favor.

The legalization associated with Constantine and Licinius in AD 313 represented a major turning point.

Later in the fourth century, Nicene Christianity gained official imperial status.

From that point onward, Christianity and political power became increasingly intertwined.

This produced opportunities:

Public churches
Councils
Education
Charity
Institutional stability

But also dangers:

Coercion
Political manipulation
Privilege
Religious persecution
Confusion between empire and kingdom

The religion of the crucified Messiah now possessed relationships with emperors.

The Church would repeatedly struggle with that tension.

43. From Rome to Medieval Europe

After the western Roman Empire fragmented, Christian institutions remained important across Europe.

Missionaries carried Christianity among:

Franks
Anglo-Saxons
Germanic peoples
Celtic peoples
Scandinavians
Slavic peoples

Monasteries became centers of:

Worship
Manuscript copying
Education
Agriculture
Hospitality
Mission

The Bible moved into new languages and cultures.

Christianity increasingly helped shape European civilization.

44. Christianity and Western Civilization

Over centuries, Christianity influenced Western thought concerning:

Human dignity
Moral responsibility
Charity
Education
Hospitals
Law
Art
Music
Literature
Universities
Political thought
Care for the poor

Christian ideas contributed significantly to the moral and intellectual inheritance of Europe.

But the relationship was never simple.

Christian societies also practiced:

Warfare
Persecution
Antisemitism
Slavery
Colonial domination
Religious coercion

Christian influence must therefore be evaluated historically rather than romanticized.

The existence of a “Christian civilization” did not mean that everything such civilizations did was Christian.

45. The Cross versus Christendom

Here 1 Corinthians 1 becomes especially important again.

Once Christianity gained political influence, Christians faced a temptation very different from the first century.

The earliest Church had to resist being intimidated by worldly power.

Later Christianity had to resist becoming identified with worldly power.

Paul’s words remain the corrective:

“God chose what is weak in the world to shame the strong.”

The cross judges every Christian empire.

It judges:

Nationalism
Ecclesiastical pride
Military triumphalism
Political domination
Claims of cultural superiority

Christianity may influence civilization.

But civilization must never replace Christ.

46. Jerusalem, Athens, and Rome

The development of Western civilization is sometimes described symbolically through three cities:

Jerusalem

Represents:

Biblical revelation
Israel
Covenant
Prophets
Monotheism
Christian origins

Athens

Represents:

Greek philosophy
Reason
Logic
Intellectual inquiry
Classical culture

Rome

Represents:

Law
Government
Political organization
Imperial administration

Western Christianity eventually interacted deeply with all three inheritances.

But their relationship must be properly ordered.

Christianity did not originate as a synthesis of three equal traditions.

It originated from God’s revelation through Israel culminating in Jesus Christ.

Greek thought provided intellectual tools.

Rome provided historical and institutional settings.

But Jerusalem supplied Christianity’s biblical story.

And at the center of that story stands not Athens’ philosopher or Rome’s emperor, but the crucified Messiah.

47. Why Did Christianity Spread?

Historians identify many contributing factors.

Among them were:

Jewish diaspora communities
Greek as a widely shared language
Roman roads
Mediterranean shipping
Large interconnected cities
Household networks
Migration
Christian charity
Strong communal identity
Missionary activity
Adaptability across cultures

These factors matter and should be taken seriously.

Historical studies of Christian diffusion confirm that transportation networks, population centers, geographical distance, and existing social structures significantly influenced how quickly Christian communities appeared in various parts of the empire. (PubMed Central (PMC))

But historical mechanisms do not exhaust the Christian explanation.

Paul would have answered the question differently.

Why did Christianity spread?

“Christ the power of God and the wisdom of God.”

From within the Christian understanding of its own history, roads explain how missionaries traveled.

Greek explains how people communicated.

Cities explain where networks formed.

But none of those explains why people believed that a crucified Jew was the risen Lord.

For Paul, the decisive power lay in the gospel itself and the work of God through the Holy Spirit.

48. Christianity Did Not Conquer Rome by Becoming Rome

This is one of the great paradoxes of Christian history.

Rome crucified Jesus.

Rome imprisoned Paul.

Rome executed Christians.

Yet Christianity eventually became deeply established within the Roman world.

The earliest Christians accomplished this without:

Legions
Political office
Imperial taxation
State churches

Their primary tools were:

Preaching
Scripture
Baptism
The Lord’s Supper
Hospitality
Charity
Community
Martyrdom
Personal witness

The empire possessed the sword.

The Christians proclaimed the cross.

Paul’s paradox becomes historical:

“The weakness of God is stronger than men.”

49. The Danger of Calling Christianity a Western Religion

Today Christianity is sometimes described as a Western religion.

Historically, that description is incomplete.

Christianity:

Began in the Middle East.
Emerged from Judaism.
Developed early centers in Syria and Egypt.
Spread into Africa and Asia.
Reached India in ancient Christian tradition.
Developed Greek, Syriac, Coptic, Armenian, Latin, Ethiopian, and other forms.

Western Christianity eventually became extraordinarily influential, especially through Europe and later the Americas.

But Christianity itself is not owned by the West.

Revelation presents the final Church as:

“A great multitude that no one could number, from every nation, from all tribes and peoples and languages.”
— Revelation 7:9

The direction of Acts is therefore not:

Jerusalem → Europe → Western ownership of Christianity.

It is:

Jerusalem → the nations.

Rome is an important station.

It is not the destination of God’s kingdom.

50. The Gospel’s Extraordinary Cultural Journey

Consider what happened historically.

A proclamation originating among Jews in Roman Judea was translated and communicated within Greek-speaking culture.

It entered:

Synagogues
Homes
Marketplaces
Workshops
Ports
Philosophical centers
Roman colonies

It crossed:

Ethnic boundaries
Linguistic boundaries
Political boundaries
Class boundaries
Gender boundaries
National boundaries

Eventually it survived the empire within which it had first traveled.

Rome itself ceased to rule the Mediterranean world.

The gospel continued.

That fact does not by itself prove Christianity true.

But historically it remains remarkable.

51. A Korean Reader Looking Westward

For a Korean Bible study, this history raises an especially useful perspective.

Christianity may sometimes appear to Koreans as a religion transmitted from the West.

Historically, however, the story is more complicated.

The gospel did not originate in:

Britain
Germany
France
Italy
Spain
The United States

It originated in the Jewish world of the eastern Mediterranean.

Europe itself was once mission territory.

Paul crossed into Macedonia as someone carrying an Asian and Middle Eastern religious proclamation toward Europe.

The Europeans did not give Christianity to Jerusalem.

Jerusalem gave the gospel to the nations.

Centuries later European and American missionaries became important in the transmission of Christianity into Korea.

But they were themselves heirs of an older transmission.

The chain therefore looks something like:

Jerusalem → Mediterranean world → Europe → wider Western world → global missions → Korea

But even this is incomplete because ancient Christianity simultaneously moved through Africa and Asia.

The history should therefore produce humility.

No culture owns the gospel.

Every culture receives it.

Every culture interprets it.

Every culture must also allow Scripture to judge it.

52. From Western Mission to Global Christianity

The modern missionary movement carried Christianity extensively from Europe and North America into:

Africa
Asia
Oceania
Latin America

Missionaries established:

Churches
Schools
Hospitals
Seminaries
Bible translation projects

But mission also became entangled at times with:

Colonialism
Cultural superiority
Political expansion

The gospel should therefore be distinguished from the civilization that sometimes carried it.

A missionary may carry:

Christ

and also carry:

his own culture.

The two are not identical.

Every Christian community must learn to distinguish:

What comes from Scripture?

from:

What did we inherit from the culture that taught us Scripture?

That is a deeply Berean question.

53. The Gospel Continues to Move

Christianity today cannot be understood simply as a movement from the West to the rest of the world.

Christianity has become increasingly polycentric.

African, Asian, Latin American, Middle Eastern, European, and North American Christians participate in the global Church.

Mission now travels:

Africa to Europe
Korea to other parts of Asia
Latin America to North America
Asia to Europe
Everywhere to everywhere

The movement anticipated in Acts 1:8 did not terminate when Paul reached Rome.

The phrase remains open:

“To the end of the earth.”

54. Conversation Partners

F. F. Bruce

Bruce emphasized the importance of reading Acts as both theology and history.

The geographical movement from Jerusalem toward Rome is not incidental. Luke uses it to show the gospel moving beyond its original Jewish setting into the Gentile world.

Acts nevertheless remains centered upon divine initiative—the Holy Spirit repeatedly directs mission.

C. H. Dodd

Dodd’s work on early Christian preaching drew attention to the core apostolic proclamation sometimes described as kerygma.

The early Church proclaimed events:

Jesus’ ministry
Death
Resurrection
Exaltation
Coming judgment

Christianity expanded through proclamation of what God had done rather than merely through dissemination of ethical philosophy.

N. T. Wright

Wright has repeatedly emphasized that Paul’s gospel cannot be separated from Israel’s story or from the claim that Jesus is the world’s true Lord.

This helps prevent Christianity’s later Western history from being read backward into its origins.

Paul was not introducing a European religion.

He was announcing the fulfillment of Israel’s story through Israel’s Messiah for the sake of the nations.

Tom Holland

As a modern historian of the classical world, Tom Holland has argued that Christian assumptions deeply reshaped Western moral imagination, even within societies that have become increasingly secular.

His historical argument is valuable for understanding Christianity’s influence.

But a Berean study must distinguish two questions:

How deeply has Christianity influenced Western culture?

and:

Is Christianity true?

Historical influence cannot answer the second question.

For that, the Christian claim returns to Christ, Scripture, and above all the resurrection.

55. What Christianity Took from the Ancient World

Christianity used elements already present within the civilizations it encountered.

From the Jewish world came:

Scripture
Covenant
Messiah
Monotheism
Prophetic expectation

Greek culture supplied:

A widely shared language
Philosophical vocabulary
Forms of rhetoric and argument

Roman civilization supplied:

Transportation networks
Political geography
Legal structures
Urban connections

Later Christian thinkers employed philosophical concepts to explain doctrine more precisely.

But borrowing vocabulary does not necessarily mean borrowing the underlying faith.

Christianity translated itself.

It did not simply become whichever culture it entered.

56. What Christianity Challenged

Christianity also challenged the cultures through which it traveled.

It challenged:

Pagan worship

Christians confessed one God.

Emperor worship

Jesus—not Caesar—was Lord.

Social pride

In Christ, worldly status could not determine spiritual worth.

Sexual practices

Christian communities taught distinctive patterns of holiness.

Exposure and neglect of vulnerable people

Christian ethics emphasized care for weak and unwanted people.

Revenge

Jesus taught enemy love.

Death

The resurrection proclaimed that death would not have the final word.

Christianity spread partly by adapting to culture.

It also spread by refusing to conform completely to culture.

57. The Cross Remains the Test

The decisive question is not:

Did Christianity become influential?

Many movements have become influential.

Nor:

Did Christianity help shape Western civilization?

Historically it certainly did.

Paul gives a deeper criterion:

“We preach Christ crucified.”

The Church remains Christian only insofar as it remains centered upon Christ.

A wealthy church can forget the cross.

A powerful church can forget the cross.

A sophisticated church can forget the cross.

A politically connected church can forget the cross.

A missionary church can forget the cross.

The cross therefore not only launched Christian proclamation.

It continually judges Christian civilization.

58. What Does This Mean for the Church Today?

No Nation Owns Christianity

Christianity belongs neither to East nor West.

Christ is Lord of all.

Cultural Influence Is Not the Same as Faith

A society may retain Christian assumptions while losing Christian confession.

Mission Requires Translation

The gospel must be communicated intelligibly within every culture.

Translation Requires Discernment

Not everything in the receiving culture—or the missionary’s culture—is compatible with Christ.

Weakness Does Not Mean Failure

The gospel began with a crucified Messiah.

The Church should therefore be cautious about measuring success exclusively through:

Numbers
Wealth
Political influence
Buildings
Cultural prestige

Power Requires Suspicion

Christian history repeatedly demonstrates that political power can compromise Christian witness.

Ordinary Christians Matter

The gospel often spreads through people whose names history never records.

59. How Certain Are We?

Historically Well Established

We can say with considerable confidence that:

Christianity began as a Jewish movement in the eastern Roman world.
Jesus was crucified under Roman authority.
The earliest Christian proclamation centered upon his death and resurrection.
Christianity spread rapidly beyond Judea during the first century.
Greek played an important role in the movement’s expansion.
Jewish diaspora communities provided important settings for early Christian preaching.
Christian communities appeared across Asia Minor, Macedonia, Greece, and Rome during the apostolic period.
Paul played a major role in the Gentile mission.
Christianity existed in Rome before Paul’s arrival.
Christianity also expanded into Africa and regions east of the Roman Empire.
Early Roman Christianity was not simply Latin Christianity.
Christianity became increasingly associated with imperial and European civilization only gradually. (OUP Academic)

Probable but Less Certain

We cannot reconstruct with equal confidence:

Exactly who first brought Christianity to Rome.
The complete routes followed by unnamed missionaries.
The precise size of Christian communities during the first and second centuries.
Every route by which Christianity first entered particular regions.
The exact role played by each social class in expansion.

Modern scholarship cautions that numerical reconstructions of the earliest Christian population remain uncertain. (OUP Academic)

Theological Claims

Historical research can establish with considerable confidence that Christians proclaimed Jesus’ resurrection.

Historical research can examine evidence surrounding that claim.

But the confession:

Jesus is Lord

is ultimately a theological claim.

Likewise, historians can identify roads and social networks that facilitated Christianity’s expansion.

The claim that the Holy Spirit empowered the mission comes from the biblical interpretation of those events.

A Berean study should distinguish historical mechanism from theological explanation without artificially separating them.

60. A Berean Evaluation

The movement from Jerusalem to Rome teaches us something crucial about Christianity.

The gospel entered cultures without belonging exclusively to any of them.

It entered Jewish, Greek, Roman, African, Asian, and eventually European worlds.

Each contributed something to Christianity’s historical expression.

Each also introduced temptations requiring correction.

The gospel could use Greek language without becoming Greek philosophy.

It could travel Roman roads without becoming Roman imperial ideology.

It could shape Europe without becoming European property.

It could be carried by Western missionaries without becoming a Western possession.

This is where Paul’s words to Corinth remain decisive.

Christianity does not finally rest upon:

Civilizational superiority
Intellectual prestige
Political power
Military strength
Cultural dominance

It rests upon:

“Christ crucified.”

That remains a scandal.

God’s Messiah conquered not by crucifying his enemies but by being crucified.

God’s kingdom advanced not through the legions of Rome but through witnesses.

Its first great missionaries possessed no empire.

Its first churches met largely in homes.

Its Scriptures moved across languages.

Its message crossed continents.

The kingdom outlived the empire that crucified its Lord.

For Christians, that history should produce neither cultural pride nor triumphalism.

It should produce humility.

The Christian does not say:

Look what Western civilization accomplished.

The Christian confession is:

Look what God has done through Christ.

Berean Reflection

Imagine standing in Jerusalem shortly after the crucifixion.

Rome appears permanent.

Caesar possesses armies.

Greek philosophy possesses centuries of intellectual prestige.

The Jerusalem religious establishment possesses institutions and authority.

Jesus’ followers possess almost none of these things.

Their teacher has been executed.

Their movement appears fragile.

Then listen again to Paul’s words:

“God chose what is weak in the world to shame the strong.”

Within a generation, Christian communities existed across the eastern Mediterranean and in Rome itself.

Within centuries, the empire that crucified Jesus would contain churches throughout its territories.

Within many more centuries, the gospel would travel into cultures the apostles could scarcely have imagined.

Yet the deepest lesson is not that Christianity eventually became powerful.

The deepest lesson is that Christianity was already powerful before it possessed worldly power.

Its power was:

The gospel
The resurrection
The Holy Spirit
The Word
Witness
Love
Sacrificial community
Hope

That distinction may be as important for the modern Church as it was for Corinth.

Scripture as Our Final Authority

Historical scholarship can help us understand:

Roman roads
Mediterranean travel
Greek language
Jewish diaspora communities
Ancient cities
Political structures
Cultural exchange
The growth of Christian communities

These things illuminate the setting in which Christianity spread.

But Scripture gives the Christian theological interpretation of the movement.

Acts says:

“You will receive power when the Holy Spirit has come upon you, and you will be my witnesses.”

Paul says:

“The word of the cross … is the power of God.”

The Roman road was useful.

The Greek language was useful.

The Mediterranean ship was useful.

The synagogue network was useful.

The city was useful.

Paul was useful.

But none was the gospel.

At the center stood Jesus Christ:

crucified, risen, and proclaimed as Lord.

The historical journey may be summarized:

Jerusalem → Judea → Samaria → Antioch → Asia Minor → Macedonia → Corinth → Rome → beyond

But the theological movement is simpler:

The Cross → Witness → The Nations

And the movement continues until the vision of Revelation is fulfilled:

“A great multitude … from every nation, from all tribes and peoples and languages.”
— Revelation 7:9

Scripture remains the final authority by which Christianity’s missionary methods, cultural adaptations, political alliances, historical claims, and continuing global witness must be examined.

Discussion Questions

Why would the message of a crucified Messiah have appeared foolish in the first-century world?
What does Paul mean by “the word of the cross”?
Why was the cross a stumbling block to many Jewish hearers?
Why could it appear foolish to Greek and Roman hearers?
What does Acts 1:8 tell us about the geographical movement of the gospel?
Why must Christianity’s Jewish origins remain central to its identity?
How did Pentecost anticipate international mission?
What role did Jewish diaspora communities play in the spread of Christianity?
Why was the Greek language important?
How did persecution unintentionally contribute to Christian expansion?
Why was the Samaritan mission an important cultural as well as geographical development?
Why is Cornelius important in the story of Gentile Christianity?
What made Antioch a turning point?
What advantages did Paul’s background give him as a missionary?
Why did Paul repeatedly work in important cities?
How could Roman roads assist Christianity without the Roman government supporting Christianity?
Why was Mediterranean shipping important?
What is misleading about an overly positive description of the Pax Romana?
What was significant about Paul’s mission entering Macedonia?
What does Lydia’s story tell us about how Christianity spread?
What does Paul’s speech in Athens teach about contextualizing the gospel?
Why is Corinth particularly important for understanding Christianity’s encounter with Greco-Roman culture?
Why does Acts end in Rome?
Why is it important that Christianity existed in Rome before Paul arrived?
Why should early Roman Christianity not simply be equated with Latin Christianity?
How did Christianity continue beyond Rome into Europe?
Why must African Christianity be included in the story?
Why must eastward Christian expansion also be remembered?
At what point did Christianity begin to acquire imperial political power?
What opportunities and dangers followed Constantine?
In what ways did Christianity shape Western civilization?
In what ways did Christian societies contradict Christianity?
What do Jerusalem, Athens, and Rome symbolize?
Why must Jerusalem remain primary when explaining Christianity’s origins?
What historical factors helped Christianity spread?
What can those factors explain, and what can they not explain?
Why is it misleading to call Christianity simply a Western religion?
How might Korean Christians understand differently the history of how Christianity reached Korea after studying Acts?
What is the difference between transmitting the gospel and transmitting one’s culture?
Can Western Christianity itself become syncretistic?
Why are ordinary unnamed believers important in Christian history?
What does the history of the early Church teach about measuring Christian success?
How does the cross challenge Christian political power?
What does it mean today to proclaim “Christ crucified”?
What should a modern church learn from the movement from Jerusalem to Rome?

Summary

Christianity began not at the center of imperial power but in Jerusalem.

Jesus had been crucified by Roman authority.

His followers nevertheless proclaimed that God had raised him from the dead and made him Lord.

Acts describes the gospel moving outward:

Jerusalem → Judea → Samaria → the nations → Rome

Several historical circumstances helped that movement:

Jewish diaspora communities
Greek language
Scripture in Greek
Roman transportation networks
Maritime travel
Cities
Households
Personal relationships
Missionary activity

But Christianity’s own explanation goes deeper.

Jesus promised:

“You will receive power when the Holy Spirit has come upon you.”

Paul declared:

“The word of the cross … is the power of God.”

The gospel eventually entered deeply into European civilization and helped shape what became the Western world.

Yet Christianity never became inherently Western.

It began in the Jewish world of the eastern Mediterranean and simultaneously traveled west, south, and east.

Europe was once mission territory.

The Western Church received the gospel before it transmitted it elsewhere.

That history should replace cultural pride with gratitude.

Christianity belongs to no civilization.

Jesus Christ is Lord of all.

The story that began in Jerusalem continues toward the vision of Revelation:

every nation, every tribe, every people, and every language gathered before God and the Lamb.

A map is particularly useful with this study because it makes Acts 1:8 visible—the movement from Jerusalem through the eastern Mediterranean to Rome while also showing that Christian expansion was never confined to Europe.