How-many-books-did-Paul-write
Short answer: Thirteen New Testament letters name Paul as their author: Romans, 1 and 2 Corinthians, Galatians, Ephesians, Philippians, Colossians, 1 and 2 Thessalonians, 1 and 2 Timothy, Titus, and Philemon. A fourteenth letter, Hebrews, does not name its author, and Christians have differed over whether Paul wrote it since the earliest centuries. So the honest answer is thirteen letters with Paul's name attached, plus Hebrews as a genuine open question. Scripture never gives us a total. What it does give is 2 Peter 3:15-16, where Peter treats Paul's letters as Scripture and acknowledges they contain things hard to understand. That is a stronger foundation than any count we could produce ourselves.
Why thirteen letters, and how we know
The count of thirteen comes from the letters themselves. Each of those thirteen opens with Paul's name, and most go on to describe him as an apostle or servant of Christ Jesus. This is not a later church decision imposed on anonymous documents. It is the plain self-presentation of the texts. Colossians 1:1 and 2 Corinthians 1:1 are typical in this regard, naming Paul and a companion at the head of the letter.
Some of the letters were co-authored. Timothy is named alongside Paul in 2 Corinthians, Philippians, Colossians, 1 and 2 Thessalonians, and Philemon. Sosthenes appears with Paul in 1 Corinthians. That does not change the count; the letters are still Paul's, written with the help of coworkers. Paul's practice of using a scribe, or amanuensis, explains the co-authorship and the variation in style across the letters.
The evidence for Paul's hand in the letters is not only the opening line. Several letters carry a closing note in Paul's own handwriting, precisely so the readers would know the letter was genuine and not a forgery. Galatians 6:11 reads, "See with what large letters I write to you with my own hand." The physical act of writing mattered to him.
The handwritten greetings that authenticate his letters
Paul did not write most of his letters himself. Romans 16:22 says, "I, Tertius, who write the letter, greet you in the Lord." That single verse lifts the curtain: Tertius was the scribe, and Paul dictated. The same pattern is likely behind most of the letters. But Paul's closing greetings, added in his own handwriting, served as a personal signature that a forgery could not easily imitate.
1 Corinthians 16:21 says, "This greeting is by me, Paul, with my own hand." Colossians 4:18 says, "The salutation of me, Paul, with my own hand: remember my bonds. Grace be with you. Amen." And 2 Thessalonians 3:17 makes the purpose explicit: "The greeting of me, Paul, with my own hand, which is the sign in every letter: this is how I write."
That last verse is unusually direct. Paul is telling the Thessalonians that a genuine letter from him can be recognized by the handwritten closing. He is warning them against a letter that claimed to be from him but was not, likely because false teachers were circulating forgeries. So the very practice that helps us identify his letters is itself mentioned in his letters.
What 2 Peter 3:15-16 actually says about Paul's letters
Peter gives us something no statistical argument can give. He writes in 2 Peter 3:15-16, "Regard the patience of our Lord as salvation; even as our beloved brother Paul also, according to the wisdom given to him, wrote to you." Peter assumes his readers already know Paul's letters and have access to them. He is not introducing Paul; he is referring to a body of writing the church already possessed and read.
The verse continues by noting that Paul writes about these matters in all his letters, and that some of what he says is hard to understand, which the ignorant and unstable twist to their own destruction, as they do the other Scriptures. That last phrase is the crucial one. Peter classifies Paul's letters alongside the other Scriptures. He treats them as authoritative, not merely as good advice.
So 2 Peter 3:15-16 establishes three things: Paul wrote multiple letters, those letters were known and collected, and they were regarded as Scripture. It does not tell us how many. Peter says all his letters, but he never enumerates them. We are left to identify the letters from the letters themselves and from the historical record.
The one letter that is genuinely disputed: Hebrews
Hebrews is the outlier. It is the only New Testament letter attributed in tradition to Paul that does not carry his name in the text. The letter is anonymous. Its Greek is different from Paul's other letters, its argument is more like a sermon than a letter, and it quotes the Old Testament in a Greek version different from the one Paul usually used. Those are real observations, not guesswork.
Christians have differed on this since the early centuries. In the East, Hebrews was often received as Paul's. In the West, some churches hesitated for a long time before accepting it into the canon. Augustine and Jerome both acknowledged the difficulty. The letter was eventually accepted as canonical because its content is consistent with apostolic teaching, not because the question of authorship was settled.
The honest position is that Hebrews is canonical and inspired even if Paul did not write it. The question "how many books did Paul write?" has a fairly firm answer of thirteen, and Hebrews is a separate question that faithful Christians have answered differently. It is a place to be honest about uncertainty rather than to force a conclusion.
Letters attributed to Paul that most scholars doubt
Beyond Hebrews, there is a second layer of dispute. The Pastoral Epistles, 1 and 2 Timothy and Titus, are questioned by many modern scholars on grounds of vocabulary, style, and the church structure they assume. Ephesians and Colossians are also questioned by some. The letters to the Thessalonians are sometimes discussed for similar reasons, though less often.
These are not the same as Hebrews, because the disputed letters do claim Paul as their author. If they were not written by Paul, they would be forgeries, which is a serious charge. Many conservative scholars defend Pauline authorship of all thirteen and offer stylistic and situational explanations for the differences. Others accept the traditional attributions as historically reliable without requiring certainty about every detail.
This is a genuine place where faithful Christians differ. It is not a test of orthodoxy. What matters is that the letters are in the canon, that they teach apostolic doctrine, and that the church receives them as Scripture. A reader can hold to the traditional view, can hold to the critical view, or can remain undecided, and still honor the text as God's word.
Why the question of authorship matters
If a letter is genuinely from Paul, it carries the weight of an apostle who saw the risen Christ and was commissioned by him. That is the force behind Peter's comparison of Paul's letters to the other Scriptures. The authority is not merely human. So authorship is not a trivial curiosity; it bears on how we receive the letter.
At the same time, the church has always received the canonical letters as authoritative on the basis of their content and their apostolic origin, not on the basis of a signature alone. The letter to the Hebrews was received without certainty about its author. The letters with Paul's name were received because their teaching matched the gospel the apostles preached.
That is a healthy model. We can ask historical questions honestly, weigh the evidence, and still read these letters as the word of God. The evidence for the thirteen is strong. The evidence for Hebrews is mixed. Neither conclusion should make us anxious about the canon we have.
How to read a Pauline letter with the author question in view
When you open one of these letters, read it as a whole. Do not start with the question of who wrote it. Start where the letter starts, with the greeting, and follow the argument. Romans opens with a sustained case for the gospel. 1 Corinthians opens with a call to unity around the cross. The opening of 1 Corinthians is a good example: it is not a greeting card but the first move in a pastoral argument.
Pay attention to the closing lines. Paul often names coworkers, sends greetings, and adds a final instruction. Those details are not filler. They tell you the letter was written into a real network of churches and real people. The closing of Romans names Tertius the scribe and a long list of believers. That is the texture of a real letter.
Then read the letter in the company of the others. Paul returns to the same themes: grace, faith, the cross, the resurrection, the unity of Jew and Gentile, the work of the Spirit, and the hope of glory. The letters interpret one another. A difficult verse in one is often clarified by a clear verse in another. This is how the church has always read them.
What the church has historically said
The early church received thirteen letters as Paul's with little controversy. The Muratorian Canon, an early list from around the second century, names most of them. By the fourth century, the canonical lists we recognize included the thirteen plus Hebrews, though the status of Hebrews varied by region. The tradition is stable on the thirteen.
That tradition did not emerge from a committee vote. It emerged from churches that had read these letters aloud in worship for generations. The letters were quoted as authoritative by writers like Clement of Rome and Ignatius within a century of Paul's death. That is early and widespread evidence, and it is the main reason the thirteen are uncontroversial.
Hebrews is the exception. It was debated longer because its authorship was uncertain, but it was finally accepted on the strength of its content. The church decided that the letter taught the apostolic faith, and that was enough. The same standard applies to every book we read: does it faithfully convey the gospel handed down by the apostles?
Biblical fidelity check
2 Peter 3:15-16 establishes that Paul wrote multiple letters, that they were known to the churches, and that Peter regarded them as Scripture. It does not establish how many letters Paul wrote. Peter says all his letters without listing them, and he does not mention Hebrews at all. The verse is a witness to the authority of Paul's letters, not an inventory of them. Any count we give comes from the letters themselves and from historical tradition, not from this verse.
A common misreading is to treat 2 Peter 3:15-16 as proof that Paul wrote a specific number of books, or as proof that Hebrews was Paul's. Neither follows. The verse says Paul wrote, and that his letters are hard to understand and are twisted by the unstable. It speaks to authority and to difficulty, not to a catalogue. The count of thirteen comes from the letters that name Paul, and Hebrews remains a separate question that sincere believers have answered differently. That distinction keeps us honest.
Other passages that speak to 2 Peter 3:15-16
The letters of Paul themselves give us the clearest window into how he wrote and how his letters functioned. For a starting point in one of his letters, see What Does 1 Corinthians 1:10 Mean? Context, Theology, and Application. To see how Paul grounds his appeals in God's faithfulness, see What Does 1 Corinthians 1:9 Mean? Context, Theology, and Application. For an overview of the whole opening section, see 1 Corinthians 1: Called, United, and Boasting in the Lord. And for the warnings and freedom that follow later in the same letter, see 1 Corinthians 10: Warnings and Freedom.
Frequently asked questions
Did Paul write thirteen or fourteen books of the Bible?
Thirteen New Testament letters name Paul as the author: Romans, 1 and 2 Corinthians, Galatians, Ephesians, Philippians, Colossians, 1 and 2 Thessalonians, 1 and 2 Timothy, Titus, and Philemon. Hebrews is the fourteenth book often associated with him, but it does not name its author, and Christians have disputed its authorship since the early centuries. Most Bibles therefore list thirteen letters as Paul's, with Hebrews placed among the general letters. The count depends on whether you include the disputed letter.
Does 2 Peter 3:15-16 tell us how many letters Paul wrote?
No. The verse says Paul wrote to the readers according to the wisdom given to him, and that he does this in all his letters. It confirms that Paul wrote multiple letters, that they were known, and that Peter regarded them as Scripture. It never gives a number and never lists them. The count of thirteen comes from the letters that name Paul as author, not from Peter's statement. Peter's point is about authority, not inventory.
Why do some scholars doubt that Paul wrote all thirteen letters?
Some scholars question 1 and 2 Timothy, Titus, Ephesians, and Colossians on grounds of vocabulary, style, and the church structures the letters assume. These letters do claim Paul as author, so doubting them raises the question of forgery. Many conservative scholars defend Pauline authorship and offer explanations for the differences. This is a place where faithful Christians differ, and it is not a test of orthodoxy. The letters remain canonical and authoritative regardless of how the question is settled.