The apostle Paul wrote 13 books of the New Testament: Romans, 1 and 2 Corinthians, Galatians, Ephesians, Philippians, Colossians, 1 and 2 Thessalonians, 1 and 2 Timothy, Titus, and Philemon. Each one is a letter, written either to a church or to an individual, and together they make up nearly half of the New Testament’s books. They explain the gospel, shape Christian living, and remain God’s Word for us today.
Who Was the Apostle Paul?
Before he was Paul the apostle, he was Saul of Tarsus, a zealous Jewish leader who hunted down Christians and approved of their deaths. Then, on the road to Damascus, the risen Jesus confronted him in a blinding light, and his life was turned upside down (Acts 9:1-19). The man who had tried to destroy the church became its most tireless missionary, planting churches across the Roman world.
Paul never got over the grace that had rescued him. He saw his own story as living proof that no one is beyond the reach of God’s mercy.
1 Timothy 1:15-16 Here is a trustworthy saying that deserves full acceptance: Christ Jesus came into the world to save sinners—of whom I am the worst. But for that very reason I was shown mercy so that in me, the worst of sinners, Christ Jesus might display his immense patience as an example for those who would believe in him and receive eternal life.
That humility and gratitude run through all of his letters. Paul wasn’t writing as a religious expert who had it all figured out. He was writing as a forgiven sinner who wanted others to know the same Savior.
Paul’s Letters to Churches
Nine of Paul’s letters were written to churches or groups of believers. Romans is often called his masterpiece because it lays out our deep need to be made right with God and shows that this is only possible through Jesus’ sacrifice. In 1 Corinthians, Paul confronts the sins a church can fall into and calls believers to live in a way that honors God, while 2 Corinthians unpacks the new covenant we share in Christ and the life of worship and service it produces. Galatians fiercely defends the truth that salvation comes through faith in Christ alone, not faith plus our own efforts.
Romans 1:16 For I am not ashamed of the gospel, because it is the power of God that brings salvation to everyone who believes: first to the Jew, then to the Gentile.
Ephesians celebrates every spiritual blessing that belongs to us in Christ and the power of the church as God’s people. Philippians, written while Paul was in chains, overflows with joy. Colossians shows that Jesus is supreme over all creation and explains how to live because of his work on the cross. And 1 and 2 Thessalonians look ahead to Jesus’ return, encouraging believers to live ready and hopeful while they wait.
Paul’s Letters to Individuals
Paul also wrote four letters to individuals. 1 Timothy and Titus were written to two younger leaders Paul had mentored, giving practical guidance on organizing healthy churches and helping believers grow to maturity. 2 Timothy is Paul’s final letter, written from prison near the end of his life, and it reads like a father’s farewell to a beloved son.
2 Timothy 4:7-8 I have fought the good fight, I have finished the race, I have kept the faith. Now there is in store for me the crown of righteousness, which the Lord, the righteous Judge, will award to me on that day—and not only to me, but also to all who have longed for his appearing.
Then there’s Philemon, the shortest of Paul’s letters. In it, Paul asks a wealthy Christian named Philemon to welcome back Onesimus, a runaway slave who had become a believer, “no longer as a slave, but better than a slave, as a dear brother” (Philemon 1:16). It’s a beautiful picture of how the gospel transforms relationships. You may also wonder about Hebrews. Its author never names himself, and while some early Christians credited it to Paul, most scholars today believe someone else wrote it.
Why Paul’s Letters Still Matter
It would be easy to treat Paul’s letters as interesting ancient mail, but the early church recognized them as far more than that. Even the apostle Peter, writing during Paul’s lifetime, placed Paul’s letters alongside the rest of Scripture.
2 Peter 3:15-16 Bear in mind that our Lord’s patience means salvation, just as our dear brother Paul also wrote you with the wisdom that God gave him. He writes the same way in all his letters, speaking in them of these matters. His letters contain some things that are hard to understand, which ignorant and unstable people distort, as they do the other Scriptures, to their own destruction.
Peter’s honesty is refreshing. Some parts of Paul’s writing are hard to understand, so we read carefully, in context, and with others who can help. But these letters carry God’s authority and speak directly to our lives today. If you’ve never read one all the way through, Philippians or Ephesians is a great place to start.
The Takeaway
The books Paul wrote are 13 New Testament letters, from Romans to Philemon. Nine were written to churches and four to individuals, and all of them point us to the grace of Jesus that transformed Paul’s own life. Pick one this week and read it start to finish.
