Chapter 4 — Ephesus (AD 431): Who Is Jesus Christ?

Estimated reading time: 16–20 minutes

By the early fifth century, the church had already fought major battles over the divinity of the Son and the Holy Spirit.

Nicaea had affirmed that the Son is truly divine.

Constantinople had reaffirmed Nicene faith and clarified the divine status of the Holy Spirit.

But another question remained:

How are the divine and human realities of Jesus Christ united in one person?

This question came to a head at the Council of Ephesus in AD 431.

The controversy centered especially on two major figures:

Nestorius, bishop of Constantinople
Cyril, bishop of Alexandria

The debate is often summarized as a dispute over whether Mary could properly be called:

Theotokos

a Greek term meaning:

God-bearer

or more loosely:

Mother of God

But the real issue was not primarily about Mary.

It was about Jesus.

The theological question was:

Is the one born from Mary truly the same divine Son who existed eternally with the Father?

Ephesus answered:

Yes.

Jesus Christ is one person.

The divine Son did not merely inhabit a separate human individual.

The one who was born, suffered, died, and rose is the eternal Son incarnate.

Historical Setting

The council met in:

Ephesus

in:

AD 431

during the reign of the emperor:

Theodosius II

Ephesus was one of the most important cities of the eastern Roman Empire.

It was already famous in Christian memory.

Paul had ministered there.

The letter to the Ephesians was associated with the city.

Revelation addresses the church in Ephesus.

By the fifth century, however, Ephesus became the stage for one of Christianity’s most intense theological conflicts.

The Question After Nicaea

Nicaea had answered:

Is the Son truly divine?

Yes.

But once Christ’s full divinity was affirmed, another difficulty emerged.

Jesus is also plainly human.

The New Testament says that Jesus:

Was born
Grew
Became tired
Hungered
Wept
Suffered
Died

Yet Scripture also presents him as:

Eternal
Divine
Creator
Worthy of worship

How are these realities related?

The Incarnation

John gives one of the most concise statements:

“The Word became flesh and dwelt among us.”
— John 1:14

This verse became central to later Christology.

The eternal Word:

became flesh

The verse does not say merely that the Word:

lived beside a human being.

Nor merely that God:

inspired a human teacher.

The Christian claim is incarnation.

What Does “Incarnation” Mean?

The word incarnation comes from Latin language connected with:

flesh.

It refers to the Christian belief that the eternal Son truly became human.

This does not mean the Son ceased to be divine.

Rather, Christian theology eventually expressed the mystery this way:

The Son assumed a complete human nature while remaining fully divine.

How precisely to say this became one of the central theological problems of the fifth century.

Different Schools of Interpretation

Two major theological traditions shaped the debate.

Alexandria

The Alexandrian tradition strongly emphasized the unity of Christ.

It wanted to avoid dividing Jesus into two subjects.

Cyril of Alexandria became its most important spokesman.

Antioch

The Antiochene tradition generally emphasized the reality and completeness of Christ’s humanity.

It feared that overly strong language of unity might dissolve Christ’s human nature into his divinity.

Nestorius emerged from this broader theological environment.

These distinctions should not be exaggerated into two completely opposed schools, but they help explain the controversy.

Who Was Nestorius?

Nestorius became bishop of Constantinople in AD 428.

He was known as a preacher and theologian.

Soon after taking office, controversy erupted over language used for Mary.

Many Christians called Mary:

Theotokos

Nestorius objected to this terminology, or at least to certain ways it was being understood.

The Meaning of Theotokos

The Greek word:

Theotokos

is composed of terms referring to:

God

and:

bearing or giving birth.

It is often translated:

Mother of God

But that English phrase can be misunderstood.

The title does not mean:

Mary existed before God.

Nor:

Mary created the divine nature.

Nor:

Mary is the origin of God.

Its theological purpose was Christological.

It asked:

Who was born from Mary?

The answer given by Cyril and his supporters was:

The one born from Mary is the divine Son incarnate.

Nestorius’s Concern

Nestorius worried that calling Mary Theotokos could imply that:

the divine nature itself began in Mary’s womb

or:

God as God was born and suffered.

He preferred language that clearly preserved the distinction between Christ’s divinity and humanity.

One term associated with his preferred approach was:

Christotokos

meaning:

Christ-bearer

or:

Mother of Christ.

Why Cyril Objected

Cyril believed Nestorius’s language divided Christ too sharply.

If one speaks of:

the human Jesus

and:

the divine Son

almost as two separate acting subjects, then who actually suffered on the cross?

Who was born from Mary?

Who performed miracles?

Who died?

Cyril wanted to insist:

The one Jesus Christ is the eternal Son incarnate.

The Real Issue Was Not Mary

The controversy is sometimes mistakenly presented as:

One side honored Mary and the other side did not.

That misses the central issue.

The theological question was:

How many personal subjects are there in Christ?

Is Jesus one person?

Or does the language effectively divide him into:

A divine person
A human person

loosely joined together?

Ephesus defended the unity of Christ’s person.

Biblical Foundations

Several biblical texts became central to the discussion.

John writes:

“The Word became flesh.”
— John 1:14

Paul writes:

“When the fullness of time had come, God sent forth his Son, born of woman.”
— Galatians 4:4

Notice the subject:

God sent his Son

and that Son was:

born of woman.

The same Son who is sent by God is the one who is born.

Galatians 4:4

This verse supports a central Christological principle.

Paul does not say:

God sent a divine Son who then associated himself with a separately existing human person.

He says:

“God sent forth his Son, born of woman.”
— Galatians 4:4

The subject remains continuous.

The Son is both:

Sent from God
Born from a woman

This became important for affirming personal unity.

Philippians 2

Paul says Christ Jesus:

“though he was in the form of God”

then:

“emptied himself, by taking the form of a servant, being born in the likeness of men.”
— Philippians 2:6–7

Again, the same subject exists in divine glory and enters genuine human existence.

The passage does not describe two separate persons.

Romans 9:5

Paul speaks of Christ:

“who is God over all, blessed forever.”
— Romans 9:5

The exact punctuation and syntactical interpretation have been debated, but the verse has long played a role in discussions of Christ’s divine status.

Other passages make the same broader point more clearly.

1 Corinthians 2:8

Paul refers to those who:

“crucified the Lord of glory.”
— 1 Corinthians 2:8

This is striking language.

The one crucified is described as:

the Lord of glory.

The divine identity and the human suffering belong to the same personal subject.

Acts 20:28

In a text with important manuscript and translation questions, Paul speaks of the church purchased with divine blood.

The verse has often been used in later Christological reflection because it illustrates how actions proper to Christ’s humanity can be predicated of the person who is divine.

Again, the issue is personal unity.

Can God Suffer?

This became a difficult theological question.

Classical Christianity holds that the divine nature is not subject to suffering in the same way creatures are.

Yet the person who suffered on the cross is the divine Son.

Later theology therefore distinguished between:

who suffers

and:

according to which nature he suffers.

The person is the Son.

He suffers according to his human nature.

This distinction became especially important after Ephesus and at Chalcedon.

Communication of Properties

Later theology developed the concept often called:

communicatio idiomatum

or:

communication of properties.

This means that statements belonging to either nature can be predicated of the one person of Christ.

Thus Christians can say:

God the Son was born.

or:

The Lord of glory was crucified.

This does not mean the divine nature itself underwent biological birth or ceased to exist.

It means the person who is divine truly experienced these things in his humanity.

The Council Is Called

The dispute between Cyril and Nestorius escalated rapidly.

Letters were exchanged.

Alliances formed.

Theological accusations multiplied.

Eventually Emperor Theodosius II called a council to meet at Ephesus in AD 431.

The atmosphere was tense from the beginning.

Cyril Arrives

Cyril arrived with a substantial group of bishops.

Nestorius was already present.

But an important delegation from Antioch, led by:

John of Antioch

had not yet arrived.

This delay became enormously controversial.

Cyril Opens the Council

Cyril and his supporters decided to begin the council before the Antiochene delegation arrived.

Nestorius refused to participate under those circumstances.

The council proceeded anyway.

Nestorius’s teachings were examined and condemned.

He was deposed.

The Antiochene Delegation Arrives

When John of Antioch and his bishops finally arrived, they were furious that proceedings had begun without them.

They held a rival gathering.

That gathering condemned Cyril.

For a time, there were effectively competing councils claiming legitimacy.

This episode reveals how messy conciliar history could become.

Political and Procedural Disorder

The Council of Ephesus should therefore not be imagined as a calm theological seminar.

It involved:

Competing bishops
Procedural disputes
Imperial officials
Rival condemnations
Public agitation
Ecclesiastical politics

This historical reality should not be hidden.

At the same time, procedural chaos does not by itself determine whether a theological conclusion was true or false.

The theological question must still be evaluated independently.

Nestorius Is Condemned

The council ultimately condemned Nestorius and removed him from office.

His theological language was judged to divide Christ too sharply.

The council affirmed that the one born from Mary is truly the divine Son incarnate.

Therefore the title:

Theotokos

was accepted as a legitimate Christological expression.

Was Nestorius Really “Nestorian”?

Modern scholarship has complicated the traditional picture.

Later Christian polemic sometimes portrayed Nestorius as straightforwardly teaching:

two persons in Christ.

But Nestorius’s own writings suggest that his position was more nuanced than some later caricatures imply.

The surviving evidence has led many historians to ask whether he was condemned partly because of terminology, misunderstanding, and ecclesiastical rivalry.

Therefore historical fairness requires caution.

The Bazaar of Heraclides

A work by Nestorius known as the:

Bazaar of Heraclides

survived in Syriac translation.

It suggests that Nestorius continued to defend himself against charges that he had simply divided Christ into two sons or two persons.

This does not settle the theological debate.

But it demonstrates that historical Nestorius may have been more complex than the simplified label:

Nestorianism.

Nestorius and Later “Nestorianism”

Another important distinction is necessary.

The later Church of the East was often labeled:

Nestorian

by its opponents.

But that label can be misleading.

Its Christology developed through its own Syriac theological tradition.

Modern ecumenical dialogue has shown that some ancient disagreements involved terminology as well as substantive theology.

Therefore the history should not be reduced to:

Ephesus represented Christianity; everyone else simply denied Christ’s unity.

The reality was more complicated.

Cyril of Alexandria

Cyril became one of the most influential theologians in Christian history.

His central emphasis was:

The unity of the incarnate Christ.

He insisted that the eternal Word personally assumed human nature.

Jesus is not a human individual adopted or inhabited by the Word.

The incarnate Christ is one subject.

Cyril’s Formula

Cyril famously spoke of:

one incarnate nature of the Word of God

The Greek terminology is difficult and later became controversial.

By “nature,” Cyril did not necessarily mean what later Chalcedonian theologians would mean by the same term.

This is one reason historical theology requires careful attention to changing terminology.

Words Can Change Meaning

Terms such as:

Nature
Person
Hypostasis
Essence

did not always carry fixed meanings across every theologian and region.

Two theologians might use different words while meaning something similar.

Or they might use the same word while meaning different things.

Some ancient controversies therefore involved both:

Real theological differences
Terminological confusion

Cyril’s Twelve Anathemas

Cyril issued a set of propositions known as the:

Twelve Anathemas

These strongly defended the unity of Christ and rejected language suggesting that the Word merely dwelt in a separate human individual.

Some Antiochene theologians found Cyril’s formulations dangerously ambiguous.

They feared he might blur or collapse Christ’s humanity into his divinity.

The Antiochene Concern

The Antiochene tradition wanted to preserve the full reality of Christ’s humanity.

Jesus had:

A human body
A human mind
A human will
Genuine human experience

If the divine nature overwhelms the human, then Christ’s humanity becomes incomplete or unreal.

This concern was legitimate.

The question was how to preserve full humanity without dividing Christ personally.

A Christ Who Is Not Fully Human Cannot Represent Humanity

This issue has major implications for salvation.

Hebrews says:

“He had to be made like his brothers in every respect.”
— Hebrews 2:17

If Christ is not genuinely human, then his identification with humanity becomes incomplete.

Thus both sides were trying to protect essential truths.

Cyril emphasized:

unity.

The Antiochene tradition emphasized:

full humanity.

Later Chalcedon would attempt to preserve both.

The Reunion Formula of 433

Two years after Ephesus, Cyril and John of Antioch reached a reconciliation.

The resulting agreement is often called the:

Formula of Reunion

of AD 433.

It confessed that Christ is:

Truly God
Truly man
Of one being with the Father according to divinity
Of one being with us according to humanity

This agreement helped move the church toward later Chalcedonian language.

The Importance of Reconciliation

The Formula of Reunion demonstrates that the divisions at Ephesus were not simply irreconcilable theological opposites.

Cyril accepted stronger language affirming the distinction of Christ’s divinity and humanity.

The Antiochene side accepted the legitimacy of Theotokos within a properly understood Christology.

This suggests that some controversy involved terminology and mistrust in addition to substantive disagreement.

Theotokos Revisited

Why did the title matter so much?

Because it functioned as a theological test.

If Mary gave birth to Jesus, and Jesus is one person who is the eternal Son, then the one she bore is rightly called:

God incarnate.

Again, this does not mean Mary generated the divine nature.

The title makes a statement about:

the identity of her Son.

Why Protestants Can Accept Theotokos

Many Protestants are uncomfortable with the English phrase:

Mother of God

because of later Marian devotion.

But historically, the term was first defended primarily to protect Christology.

A Protestant can affirm:

Mary is Theotokos

if the meaning is:

Mary bore Jesus Christ, who is truly God incarnate.

That affirmation does not require acceptance of later Roman Catholic doctrines about Mary.

Theotokos Does Not Establish Later Marian Dogmas

The Council of Ephesus did not define doctrines such as:

Immaculate Conception
Assumption of Mary
Papal Marian dogmas

Those developed much later.

Therefore it would be historically inaccurate to read all later Catholic Marian teaching back into Ephesus.

The council’s central concern was Christological.

Mary in Scripture

The New Testament honors Mary.

Elizabeth says:

“Blessed are you among women.”
— Luke 1:42

Mary herself says:

“All generations will call me blessed.”
— Luke 1:48

At the same time, Scripture consistently directs salvation and worship toward God in Christ.

A Berean evaluation should preserve both biblical respect for Mary and the centrality of Christ.

“Mother of My Lord”

Elizabeth asks:

“Why is this granted to me that the mother of my Lord should come to me?”
— Luke 1:43

This text became important in later reflection.

Mary is described in relation to:

my Lord.

Again, the title concerns the identity of the child.

Did Mary Give Birth to God?

The answer requires precise language.

If by “God” we mean:

the divine nature itself began to exist through Mary,

then no.

If we mean:

the person born from Mary is the eternal Son who is truly divine,

then classical Christianity answers:

yes.

This distinction prevents confusion.

One Person, Two Realities

Ephesus strongly affirmed:

one person.

But it did not yet provide the final classical formula concerning:

two natures.

That would become the central achievement of Chalcedon in AD 451.

Ephesus therefore represents another stage in doctrinal development rather than the final word on Christology.

The Danger of Dividing Christ

If Christ is divided too sharply into two subjects, several biblical statements become difficult.

Who says:

“Before Abraham was, I am”?
— John 8:58

Who says:

“I thirst”?
— John 19:28

Christian theology answers:

The same person speaks both statements.

The one Christ acts according to both divine and human realities.

The Danger of Mixing Christ’s Natures

But the opposite danger also exists.

If divinity and humanity are blended into one mixed nature, Christ’s genuine humanity may disappear.

The church therefore had to avoid both:

division

and:

confusion.

Chalcedon would eventually formulate this balance explicitly.

Jesus Weeps

John records:

“Jesus wept.”
— John 11:35

This is genuine human emotion.

Christianity does not teach that Jesus merely appeared to experience grief.

The Son truly entered human existence.

Jesus Is Tired

John says:

“Jesus, wearied as he was from his journey, was sitting beside the well.”
— John 4:6

Again, Christ experiences genuine human limitation.

He does not merely pretend to be human.

Jesus Knows What Is in Man

Yet the same Gospel also says:

“He himself knew what was in man.”
— John 2:25

The New Testament presents both extraordinary divine knowledge and genuine human experience.

Christology must account for both.

Jesus Grows in Wisdom

Luke says:

“Jesus increased in wisdom and in stature.”
— Luke 2:52

This presents a particularly challenging question.

How can the divine Son grow in wisdom?

The answer depends upon taking the incarnation seriously.

The Son assumed genuine human nature, including a genuinely human mode of development.

Later Christology would explore these questions more fully.

The Humanity of Christ Is Essential

Christian salvation depends not only upon Christ being truly divine.

He must also be truly human.

Paul writes:

“For there is one God, and there is one mediator between God and men, the man Christ Jesus.”
— 1 Timothy 2:5

The mediator belongs fully to humanity.

The Divinity of Christ Is Also Essential

At the same time, the New Testament presents Christ as more than a merely human mediator.

John says:

“The Word was God.”
— John 1:1

Thus Christian Christology must preserve both poles:

fully divine

and:

fully human.

Salvation and the Unity of Christ

The person who saves must connect humanity and God.

If Christ were merely human, he could not bring the divine life.

If he were divine without being genuinely human, he could not fully represent humanity.

Therefore the incarnation stands at the heart of Christian salvation.

Gregory of Nazianzus and Full Humanity

Before Ephesus, Gregory of Nazianzus had already expressed an important principle:

What is not assumed is not healed.

The idea is that Christ must assume complete humanity in order to redeem complete humanity.

This principle became influential in later Christology.

Apollinarianism

Before the Nestorian controversy, another Christological error had already been rejected.

Apollinaris taught that Christ’s divine Logos effectively took the place of a fully human rational mind.

This protected Christ’s unity but compromised his full humanity.

Constantinople I had rejected this approach.

Thus Ephesus inherited earlier concerns about both unity and completeness.

Christological Pendulum

Early Christological controversies sometimes moved between opposite dangers.

One approach could emphasize unity so strongly that humanity became incomplete.

Another could emphasize humanity so strongly that Christ appeared divided.

The challenge was to confess:

one Christ

who is:

fully God

and:

fully human.

Political Rivalries Among Major Sees

The theology of Ephesus cannot be separated entirely from ecclesiastical politics.

Major centers of Christian authority included:

Rome
Constantinople
Alexandria
Antioch
Jerusalem

Their bishops sometimes competed for influence.

Alexandria and Constantinople were especially important rivals.

Thus the conflict between Cyril and Nestorius had both theological and institutional dimensions.

Rome and the Council

The bishop of Rome, Celestine I, opposed Nestorius and supported Cyril.

Roman representatives eventually participated in the proceedings and endorsed Nestorius’s condemnation.

This alliance between Rome and Alexandria would not remain permanent.

At later councils, alignments shifted.

Was the Pope in Charge of Ephesus?

Roman Catholic interpretations often emphasize the role of Pope Celestine and his support for Cyril.

Eastern traditions emphasize the council’s conciliar character.

Historically, Rome was important, but the council did not operate simply as a papal administrative meeting.

Later claims about universal papal authority should not be read uncritically backward into the fifth century.

Authority Was Still Developing

The early church had significant bishops and major sees.

But the precise relationship among:

Rome
Constantinople
Alexandria
Antioch
Jerusalem

continued to develop.

Later Catholic, Orthodox, and Protestant interpretations of early church authority often emphasize different aspects of this history.

The Berean approach should avoid forcing later denominational structures onto earlier centuries.

Ephesus and the Church of the East

The condemnation of Nestorius contributed indirectly to divisions affecting Christians east of the Roman Empire.

The Church of the East developed in Persian territories and eventually spread widely through Asia.

At its height, its missionaries reached:

Persia
Central Asia
India
China

This history is often overlooked in Western accounts of Christianity.

Christianity Was Already Globalizing

By the fifth century, Christianity was no longer confined to the Mediterranean world.

Christian communities existed:

Within the Roman Empire
In Persia
In Armenia
In Ethiopia
In India
Beyond imperial borders

Christological controversy therefore eventually affected communities across vast geographical regions.

Labels Can Obscure Real People

Terms such as:

Nestorian
Monophysite
Chalcedonian

are useful historically.

But they can also oversimplify.

Modern dialogue among ancient Christian churches has revealed that groups sometimes condemned one another using formulas that did not perfectly represent what the other side actually believed.

Historical fairness requires reading each tradition on its own terms.

Ephesus and Monophysitism

Ephesus itself did not teach what later came to be called:

Monophysitism

in the crude sense that Christ’s humanity disappeared into divinity.

But Cyril’s language could be interpreted in different ways.

Later disputes over how to understand his theology contributed directly to the controversy leading to Chalcedon.

The Robber Council of Ephesus

A second council met at Ephesus in AD 449.

It became highly controversial.

Supporters defended the monk Eutyches, whose Christology was accused of confusing Christ’s natures.

Opponents later called this gathering:

the Robber Council

or:

Latrocinium

It is not counted among the ecumenical councils by Chalcedonian Christianity.

This second Ephesus should not be confused with the Council of Ephesus of AD 431.

Why 449 Matters

The disorder surrounding the council of 449 convinced many church leaders that the Christological problem remained unresolved.

Two years later, a much larger council gathered at:

Chalcedon

in AD 451.

There the church would attempt a more balanced formula.

Ephesus and Scripture

How well does the central conclusion of Ephesus fit Scripture?

The New Testament consistently treats Jesus as one subject.

The one who:

existed before Abraham

is the one who:

thirsts on the cross.

The one through whom:

all things were created

is the one who:

was born of a woman.

The one called:

Lord of glory

is the one:

crucified.

This supports the council’s insistence upon personal unity.

The One Who Died Is the Son

Paul writes:

“God shows his love for us in that while we were still sinners, Christ died for us.”
— Romans 5:8

The subject is Christ.

The death is genuinely human.

But the person who dies is not a separate human individual alongside the divine Son.

Christian theology insists that the Son himself entered death through his human nature.

“God Sent His Son”

Paul also writes:

“God sent forth his Son, born of woman.”
— Galatians 4:4

This verse is difficult to reconcile with a model in which the divine Son and the human Jesus are two separate personal subjects.

The Son himself is the one born.

One Lord Jesus Christ

Paul writes:

“For us there is one God, the Father… and one Lord, Jesus Christ, through whom are all things and through whom we exist.”
— 1 Corinthians 8:6

The same Jesus Christ belongs both to the divine work of creation and to human history.

That unity lies at the center of Christian confession.

The Council and Later Marian Devotion

Ephesus contributed significantly to the growing prominence of Mary in Christian devotion.

Once Theotokos became an important orthodox title, devotion to Mary expanded in many Christian communities.

This historical development must be distinguished from the council’s original Christological purpose.

A later practice cannot simply be assumed to have been fully present in 431.

A Berean Approach to Mary

A Berean evaluation should neither:

ignore Mary’s biblical importance

nor:

automatically accept every later Marian doctrine.

Mary should be understood first according to Scripture.

She is:

Chosen by God
Blessed
Mother of Jesus
A believer
Present within the early Christian community

But Scripture’s central focus remains on Christ.

Mary Points Beyond Herself

In Luke, Mary says:

“My soul magnifies the Lord, and my spirit rejoices in God my Savior.”
— Luke 1:46–47

Mary herself directs attention toward God.

This provides an important biblical balance.

Honoring Mary should never displace worship owed to God.

Why Theotokos Can Still Be Useful

Despite potential misunderstanding, Theotokos preserves an important Christian truth.

It says:

The one born from Mary was not merely an ordinary human later joined to God.

He was:

God the Son incarnate.

Used carefully, the term protects Christology rather than elevating Mary to divine status.

Ephesus and the Doctrine of One Person

The enduring doctrinal contribution of Ephesus can therefore be summarized:

Jesus Christ is one personal subject.

His divinity and humanity are not two separate persons.

The eternal Son truly became human.

But Ephesus Did Not Finish the Debate

A major question remained.

If Christ is one person:

How should we speak about his divine and human natures?

Can we say:

one nature?

Or:

two natures?

What exactly does “nature” mean?

These questions became explosive after Ephesus.

The Road to Chalcedon

Within twenty years, another council would attempt to preserve both:

the unity emphasized by Cyril

and:

the distinction emphasized by Antiochene theology.

That council would produce one of the most influential formulas in Christian history.

Christ is:

one person

in:

two natures.

The council was:

Chalcedon, AD 451.

Conversation Partners

Several figures are especially important for understanding Ephesus.

Cyril of Alexandria

Cyril defended the personal unity of Christ and became one of the dominant theologians of fifth-century Christianity.

His strength was insisting that the eternal Son truly became human.

His polemical style and political methods, however, were often aggressive and should not be idealized.

Nestorius

Nestorius sought to protect the distinction between Christ’s divinity and humanity.

Later accounts often simplified his theology excessively.

Modern scholarship encourages a more nuanced evaluation of what he actually intended.

John of Antioch

John represented the Antiochene bishops who objected to the way the council was conducted.

His later reconciliation with Cyril helped prepare the way toward Chalcedon.

Gregory of Nazianzus

Though he died decades before Ephesus, Gregory’s principle that what Christ does not assume cannot be healed remained important for insisting upon Christ’s complete humanity.

Theological Balance

Ephesus teaches an important lesson about theological controversies.

Often both sides are trying to protect something important.

Cyril feared:

dividing Christ.

The Antiochene tradition feared:

destroying Christ’s humanity.

The challenge was not simply choosing one concern over the other.

The church had to preserve both.

This is often how doctrinal development proceeds.

Berean Reflection

Ephesus reminds us that theological vocabulary matters because the identity of Jesus matters.

The dispute over the word:

Theotokos

can sound remote to modern readers.

But underneath it was a fundamental question:

Who was lying in the manger?

Was the infant Jesus merely a human person later associated with the divine Son?

Or was he the eternal Son truly incarnate?

The New Testament points strongly toward the latter.

The Word:

became flesh.

God:

sent forth his Son, born of woman.

The Lord of glory:

was crucified.

The biblical witness therefore treats the divine and human realities as belonging to one personal subject.

Ephesus attempted to defend that unity.

But its history also warns us against romanticizing councils.

The gathering itself was marked by:

Political rivalry
Procedural controversy
Competing assemblies
Personal hostility

A council may arrive at an important theological conclusion while still displaying very human failures in the process.

Scripture as Our Final Authority

The Council of Ephesus matters because it defended a central Christian conviction:

The eternal Son truly became human.

But Ephesus itself is not the final authority.

The title Theotokos is useful only insofar as it protects what Scripture teaches about Christ.

John writes:

“The Word became flesh and dwelt among us.”
— John 1:14

Paul writes:

“God sent forth his Son, born of woman.”
— Galatians 4:4

And Paul says that those responsible for Jesus’ death:

“crucified the Lord of glory.”
— 1 Corinthians 2:8

These texts point toward one remarkable conclusion:

The one who was born as a human being is the same divine Son who existed before his human birth.

The council’s central insight therefore rests not upon reverence for Mary but upon the identity of Christ.

Jesus is not two persons loosely joined together.

He is:

one Lord Jesus Christ.

Yet the question remained:

If Christ is one person, how do his full divinity and full humanity coexist without either being lost?

That question would lead directly to one of the most influential councils in Christian history.

Next Chapter → Chapter 5 — Chalcedon (AD 451): Fully God and Fully Human