Romans 15:4–13 — Hope, Unity, and the God of Hope

Estimated reading time: 10–12 minutes
Key passage: Romans 15:4–13
Central theme: Paul teaches that Scripture was written to give endurance, encouragement, and hope; that Jewish and Gentile believers are to glorify God together in unity; and that Christian hope is grounded in the faithfulness of God and empowered by the Holy Spirit.

“For whatever was written in former days was written for our instruction, that through endurance and through the encouragement of the Scriptures we might have hope.”
— Romans 15:4

Three Study Questions

What does Paul mean when he says that “whatever was written in former days was written for our instruction”?
Why does Paul connect Christian unity so closely with the inclusion of both Jews and Gentiles in God’s saving purpose?
What does it mean to “abound in hope by the power of the Holy Spirit”?

1. Who Wrote Romans?

The letter identifies its author as:

“Paul, a servant of Christ Jesus, called to be an apostle…”

—Romans 1:1

Paul is therefore the author of Romans.

Romans 16:22 also names Tertius, who says:

“I Tertius, who wrote this letter, greet you in the Lord.”

Tertius likely served as Paul’s amanuensis, or secretary, writing as Paul dictated or directed the composition of the letter.

2. When and Where Was Romans Written?

Romans was probably written around AD 56–58, near the end of Paul’s third missionary journey.

The strongest case places Paul in Corinth or nearby Cenchreae.

Romans 16 mentions:

Phoebe of Cenchreae
Gaius, Paul’s host
Erastus, the city treasurer

These details fit naturally with Corinth.

Paul was preparing to travel to Jerusalem with the collection for the believers there and hoped afterward to visit Rome and eventually Spain.

3. To Whom Was It Written?

Paul writes:

“To all those in Rome who are loved by God and called to be saints.”

—Romans 1:7

The Roman churches appear to have included both:

Jewish Christians
Gentile Christians

This mixed audience is crucial for Romans 14–15.

Paul is addressing tensions involving:

Food
Sacred days
Conscience
Tradition
Jewish and Gentile identity
Mutual acceptance

Romans 15:4–13 therefore belongs in a context of Christian unity across genuine cultural and theological differences.

4. Original Language and Manuscript Evidence

Romans was written in Koine Greek.

Paul’s style in Romans is rhetorically sophisticated and heavily shaped by Scripture.

One of the earliest substantial surviving manuscripts of Romans is Papyrus 46, usually dated around AD 200.

The original autograph has not survived.

Later major manuscripts such as Codex Sinaiticus and Codex Vaticanus also preserve Romans.

5. Literary Context

Romans 15:4–13 follows Paul’s extended discussion of the “strong” and the “weak” in Romans 14:1–15:3.

Paul urges believers not to despise or judge one another over disputable matters.

He then points to Christ:

“For Christ did not please himself…”

—Romans 15:3

Immediately after that, Paul turns to Scripture:

“For whatever was written in former days was written for our instruction…”

The logic is important.

Christ provides the model of self-giving love.

Scripture provides endurance, encouragement, and hope.

Then Paul prays that God will create unity among believers.

6. “Whatever Was Written in Former Days”

Paul says:

“For whatever was written in former days was written for our instruction…”

The expression refers primarily to what Christians call the Old Testament, Israel’s Scriptures.

Paul assumes that these writings remain spiritually relevant to Christians.

He does not say:

They were written only for ancient Israel and no longer matter.

Nor does he say:

Every Old Testament statement applies directly to Christians without context.

Rather, he says they were written:

“for our instruction.”

This means Christians are to read Israel’s Scriptures as part of the story in which Christ and the church now stand.

7. Scripture, Endurance, Encouragement, and Hope

Paul continues:

“that through endurance and through the encouragement of the Scriptures we might have hope.”

The sequence is significant.

Scripture produces:

Endurance
Encouragement
Hope

The Greek word for endurance is:

hypomonē — ὑπομονή

It can mean:

Perseverance
Steadfastness
Patient endurance

The word for encouragement is:

paraklēsis — παράκλησις

It can mean:

Encouragement
Comfort
Exhortation
Strengthening

Scripture therefore does more than inform.

It strengthens believers to remain faithful.

Answer to Study Question 1

What does Paul mean by “whatever was written in former days was written for our instruction”?

Paul teaches that Israel’s Scriptures continue to instruct the church.

They reveal:

God’s character
God’s faithfulness
Human failure
The consequences of unbelief
The need for endurance
The hope of redemption

Christians should therefore read the Old Testament not as an obsolete collection but as essential preparation for understanding God’s work in Christ.

At the same time, responsible interpretation respects the original historical and literary context.

The Old Testament belongs to the church because the church has been incorporated into the story of God’s redemptive work—not because the original meaning of the text can be ignored.

8. “The God of Endurance and Encouragement”

Paul now turns Scripture’s effects into a description of God himself:

“May the God of endurance and encouragement grant you to live in such harmony with one another…”

The endurance and encouragement found in Scripture ultimately come from God.

This is important.

Scripture is not a detached spiritual technique.

Its power comes from the God whose character and promises it reveals.

9. “In Accord With Christ Jesus”

Paul prays that believers will live:

“in such harmony with one another, in accord with Christ Jesus”

Christian unity is not based on everyone becoming identical.

The Roman Christians apparently differed over meaningful practices.

Paul does not demand uniformity on every secondary question.

Instead, unity is shaped by Christ.

The question becomes:

Does our conduct toward one another reflect Jesus?

10. “With One Voice Glorify God”

Paul gives the purpose:

“that together you may with one voice glorify the God and Father of our Lord Jesus Christ.”

Unity leads to worship.

The phrase “with one voice” does not necessarily imply identical opinions on every issue.

It means believers who differ can still glorify the same God together.

That is especially significant in a church containing Jews and Gentiles with different histories, customs, and convictions.

11. “Welcome One Another”

Paul writes:

“Therefore welcome one another as Christ has welcomed you, for the glory of God.”

The Greek verb is:

proslambanō — προσλαμβάνω

It can mean:

To receive
To welcome
To accept into fellowship

This is the same basic command that begins Romans 14:

“As for the one who is weak in faith, welcome him…”

Paul now provides the theological foundation:

Christ welcomed you.

Therefore:

Welcome one another.

Christian hospitality is grounded in grace received.

12. Christ Became a Servant to the Circumcised

Paul says:

“For I tell you that Christ became a servant to the circumcised to show God’s truthfulness…”

“The circumcised” refers to the Jewish people.

Paul emphasizes that Jesus’ ministry fulfills God’s promises to Israel.

Christ did not appear disconnected from Israel’s story.

He came:

“to confirm the promises given to the patriarchs.”

This guards against any reading of Christianity that treats Israel as irrelevant to the gospel.

13. “To Confirm the Promises Given to the Patriarchs”

The patriarchs include:

Abraham
Isaac
Jacob

God’s promises to them form the foundation of Israel’s covenant story.

Paul presents Christ as the fulfillment and confirmation of those promises.

God proves faithful to what he promised.

The inclusion of Gentiles therefore does not mean God abandoned Israel.

It demonstrates the larger scope of the promise.

14. “And in Order That the Gentiles Might Glorify God”

Paul continues:

“and in order that the Gentiles might glorify God for his mercy.”

The pattern is important.

Regarding Israel, Paul emphasizes:

God’s truthfulness

Regarding the Gentiles, he emphasizes:

God’s mercy

Together they show one redemptive purpose.

God remains faithful to Israel’s promises while bringing the nations into blessing.

Answer to Study Question 2

Why does Paul connect unity with Jews and Gentiles?

Because the unity of Jewish and Gentile believers is not a secondary social achievement.

It is evidence that God’s promises are being fulfilled.

Christ confirms God’s faithfulness to Israel.

Through Christ, Gentiles also glorify God for mercy.

The church therefore becomes a community in which:

Israel’s promises are honored
Gentiles are included
Neither group should despise the other

Christian unity is rooted in salvation history.

15. Paul’s Chain of Old Testament Quotations

Paul supports his argument with four quotations from different parts of Israel’s Scriptures.

This is deliberate.

He draws from:

The Law
The Prophets
The Psalms

The whole sweep of Scripture witnesses to the inclusion of the nations.

16. “Therefore I Will Praise You Among the Gentiles”

Paul first quotes:

“Therefore I will praise you among the Gentiles, and sing to your name.”

This comes from 2 Samuel 22:50 and Psalm 18:49.

The image is of praise to God occurring among the nations.

17. “Rejoice, O Gentiles, With His People”

Paul next quotes:

“Rejoice, O Gentiles, with his people.”

This comes from Deuteronomy 32:43.

The significance is striking.

Gentiles are not merely distant observers.

They rejoice with God’s people.

18. “Praise the Lord, All You Gentiles”

Paul then quotes:

“Praise the Lord, all you Gentiles, and let all the peoples extol him.”

This comes from Psalm 117:1.

Psalm 117 is the shortest psalm, yet its vision is universal:

all nations are invited to praise Israel’s God.

19. “The Root of Jesse Will Come”

Finally, Paul quotes Isaiah:

“The root of Jesse will come, even he who arises to rule the Gentiles; in him will the Gentiles hope.”

This comes from Isaiah 11:10.

Jesse was the father of David.

The “root of Jesse” therefore points to the Davidic Messiah.

Paul interprets Jesus as the one in whom the nations place their hope.

20. Why These Four Quotations Matter

Paul is not attaching random proof texts.

The quotations form a progression.

The Gentiles:

Hear praise among them
Rejoice with Israel
Praise God themselves
Hope in Israel’s Messiah

The movement is toward full participation.

Paul’s vision is therefore neither:

Israel without the nations

nor:

the nations replacing Israel.

It is:

Jews and Gentiles together glorifying God through Christ.

21. “The God of Hope”

Paul concludes with a benediction:

“May the God of hope fill you with all joy and peace in believing…”

This is one of the great descriptions of God in the New Testament.

God is:

the God of hope.

Christian hope does not begin with temperament.

Some people are naturally optimistic.

Others are naturally pessimistic.

Biblical hope rests on God’s character and promises.

22. Joy and Peace “in Believing”

Paul prays that God will fill believers with:

Joy
Peace

But notice the phrase:

“in believing.”

Faith is the context in which joy and peace flourish.

Paul does not promise that Christians will never experience:

Grief
Anxiety
Conflict
Suffering

He himself experienced all of these.

Rather, faith creates a deeper confidence beneath changing circumstances.

23. “Abound in Hope”

Paul does not merely pray that Christians will possess a little hope.

He says:

“so that by the power of the Holy Spirit you may abound in hope.”

The Greek verb carries the sense of overflowing or increasing abundantly.

Christian hope should not remain barely sufficient.

Paul envisions believers increasingly overflowing with it.

Answer to Study Question 3

What does it mean to abound in hope by the Holy Spirit?

Christian hope is not self-generated optimism.

It arises from:

God’s promises
Christ’s fulfillment of those promises
Faith in God
The work of the Holy Spirit

The Spirit enables believers to live with confidence in God’s future even when present circumstances are difficult.

This is not denial of suffering.

It is confidence that suffering does not have the final word.

24. Key Greek Terms

Endurance — hypomonē

Steadfast perseverance under difficulty.

Encouragement — paraklēsis

Comfort, exhortation, or strengthening.

Welcome — proslambanō

To receive or accept another into fellowship.

Hope — elpis

Confident expectation rooted in God’s promise.

Abound — perisseuō

To overflow, increase, or possess in abundance.

These words help reveal the movement of the passage:

Scripture → endurance → encouragement → unity → worship → hope.

25. Old Testament Background

Romans 15:4–13 is saturated with Israel’s Scriptures.

Paul draws especially upon:

Genesis 12 — blessing to all nations
Deuteronomy 32 — Gentiles rejoicing with God’s people
2 Samuel 22 / Psalm 18 — praise among the Gentiles
Psalm 117 — all nations praising God
Isaiah 11 — the Davidic Messiah becoming the hope of the nations

The inclusion of Gentiles is therefore not presented as a rejection of the Old Testament.

Paul argues precisely the opposite:

The Scriptures themselves anticipated it.

26. Conversation Partners

John Chrysostom

Chrysostom emphasized Paul’s concern for unity and mutual acceptance.

The strong should not use their strength to dominate the weak.

His contribution

Christian maturity is demonstrated by patience with others, not merely by possessing correct knowledge.

Augustine

Augustine emphasized that Scripture gives hope because it reveals God’s faithful dealings throughout history.

He also saw Christian unity as grounded in love.

His contribution

Hope grows when believers remember that God has remained faithful across generations.

Martin Luther

Luther emphasized that Scripture directs believers away from confidence in themselves and toward confidence in God’s promises.

His contribution

Biblical hope rests not on human achievement but on God’s faithfulness.

John Calvin

Calvin emphasized the connection between Scripture and perseverance.

God strengthens believers through his Word so that they can endure hardship faithfully.

His contribution

Scripture is not merely a source of doctrine but a means by which believers are strengthened.

John Wesley

Wesley emphasized that genuine Christian faith produces unity, love, joy, and peace.

He also strongly affirmed the universal scope of God’s mercy.

His contribution

Christian hope should overflow into relationships and practical holiness.

Karl Barth

Barth repeatedly emphasized that the church exists as a community called together by God rather than by ethnicity, nationality, or natural affinity.

His contribution

The unity of the church bears witness to the reconciling action of God in Christ.

Dietrich Bonhoeffer

Bonhoeffer emphasized that Christian community exists because Christ has received each believer.

We do not choose the church according to personal preference.

His contribution

Paul’s command to “welcome one another as Christ has welcomed you” challenges communities built primarily around similarity and preference.

27. A Balanced Theological Perspective

Romans 15:4–13 brings together several important themes.

Scripture and Christ

Paul treats the Old Testament as Christian Scripture precisely because it points into the story fulfilled in Christ.

Israel and the nations

The inclusion of Gentiles confirms rather than cancels God’s promises.

Unity and diversity

Paul seeks harmony without demanding absolute uniformity.

Grace and welcome

Christians welcome others because Christ first welcomed them.

Hope and the Spirit

Christian hope is grounded in God’s promise and empowered by the Holy Spirit.

28. Contemporary Application

Read the Old Testament as Christian Scripture

Christians cannot properly understand the gospel while ignoring Israel’s Scriptures.

They provide the story, promises, categories, and hopes that the New Testament assumes.

Let Scripture create endurance

The Bible is not merely information to master.

It should strengthen believers to remain faithful during difficulty.

Welcome Christians who differ from you

Paul’s churches contained substantial differences of culture, conscience, and practice.

Unity does not require every disagreement to disappear.

Resist Christian antisemitism

Romans 15 explicitly roots Christ’s mission in God’s faithfulness to Israel’s patriarchal promises.

Contempt toward Jews is therefore deeply inconsistent with Paul’s argument.

Cultivate hope rather than mere optimism

Optimism says:

Things will probably improve.

Christian hope says:

God is faithful, and his promises will ultimately stand.

Those are not the same thing.

Discussion Questions

Why does Paul appeal to the Old Testament when addressing Christian unity?
What is the difference between using Scripture for “instruction” and simply extracting rules from it?
How can Christians maintain unity when they genuinely disagree?
What does it mean to welcome another person “as Christ has welcomed you”?
Why is God’s faithfulness to Israel important for Gentile Christians?
What is the difference between Christian hope and ordinary optimism?
What role does the Holy Spirit play in sustaining hope?
How might a congregation demonstrate the picture Paul gives of Jews and Gentiles glorifying God together?

Berean Reflection

Paul begins this passage with Scripture and ends with hope.

That is not accidental.

The Scriptures tell the story of a God who remains faithful.

They show promises made, failures endured, judgments survived, mercy extended, and redemption anticipated.

That history produces endurance.

Endurance produces hope.

But Paul does not permit hope to remain private.

It must reshape Christian community.

Christ welcomed us.

Therefore:

“Welcome one another.”

And Paul makes clear that this welcome has deep historical significance.

Jesus came as the Messiah of Israel:

“to confirm the promises given to the patriarchs.”

At the same time, the Gentiles now glorify God for mercy.

The result is not two unrelated peoples.

Paul envisions one worshiping community:

Jew and Gentile,
strong and weak,
different yet reconciled,
together glorifying God.

And above this entire vision stands Paul’s final prayer:

“May the God of hope fill you with all joy and peace in believing.”

Christian hope is not confidence that circumstances will always improve.

It is confidence that God will remain faithful.

Scripture as Our Final Authority

Chrysostom reminds us that maturity should produce patience.

Augustine emphasizes the connection between Scripture and hope.

Luther directs confidence toward God’s promises.

Calvin emphasizes Scripture as a source of perseverance.

Wesley reminds us that faith should produce practical love and unity.

Barth emphasizes the church as a community created by God’s reconciling action.

Bonhoeffer reminds us that we receive fellow Christians because Christ received them first.

Each contributes something valuable.

None is the final authority.

Scripture remains our final authority.

And Paul’s prayer provides an appropriate conclusion:

“May the God of hope fill you with all joy and peace in believing, so that by the power of the Holy Spirit you may abound in hope.”