How many authors wrote the Bible?
Tradition counts about 40 authors, but the Bible gives no total. In the King James Version, 40 of its 66 books name a writer or speaker in their own verses (24 different people), and 19 books never say who wrote them. The common Protestant list names 33 people; the books name 7 more, which makes 40.
Updated October 23, 2026. What is counted: the verses of the 66 books in the King James Version, read for any line that names who wrote or spoke the book. The traditional list is GotQuestions.org's, read 2026-10-23.
What each book says about who wrote it
Each row names the KJV verse it relies on, and the build script stops if the name isn't in that verse. The traditional author is the one GotQuestions.org lists for the book. Words are King James Version verse words.
A name in a book's opening says whose words or vision it is, not who held the pen: a prophet's opening names the man the word came to, and Jeremiah 36:4 has Baruch writing Jeremiah's words down. That is why 40 plus the 19 silent books is not 66. The other 7 are Psalms (names only in the psalm titles), Ecclesiastes, 2 John and 3 John (a title only: "the Preacher", "the elder"), and Luke, John and Acts (a writer who says "I" without a name).
| Book | What the book's own text says | Traditional author | Words |
|---|---|---|---|
| Genesis | Says nothing about its writer | Moses | 38,307 |
| Exodus | Says a named person wrote part of it: Moses (Exodus 24:4) | Moses | 32,692 |
| Leviticus | Says nothing about its writer | Moses | 24,543 |
| Numbers | Says a named person wrote part of it: Moses (Numbers 33:2) | Moses | 32,930 |
| Deuteronomy | Says a named person wrote part of it: Moses (Deuteronomy 31:9) Deuteronomy 34 reports Moses' death and burial. | Moses | 28,365 |
| Joshua | Says a named person wrote part of it: Joshua (Joshua 24:26) | Joshua | 18,965 |
| Judges | Says nothing about its writer | Samuel, Nathan, Gad | 19,010 |
| Ruth | Says nothing about its writer | Samuel, Nathan, Gad | 2,574 |
| 1 Samuel | Says nothing about its writer 1 Chronicles 29:29 says David's acts are written in the book of Samuel the seer, the book of Nathan the prophet and the book of Gad the seer. | Samuel, Nathan, Gad | 25,086 |
| 2 Samuel | Says nothing about its writer | Samuel, Nathan, Gad | 20,646 |
| 1 Kings | Says nothing about its writer | Jeremiah | 24,561 |
| 2 Kings | Says nothing about its writer | Jeremiah | 23,565 |
| 1 Chronicles | Says nothing about its writer | Ezra | 20,440 |
| 2 Chronicles | Says nothing about its writer | Ezra | 26,100 |
| Ezra | Says nothing about its writer Ezra 7:27 to 9:15 is told in the first person by the scribe the chapter has just named. | Ezra | 7,451 |
| Nehemiah | Names the writer or speaker in its opening: Nehemiah (Nehemiah 1:1) GotQuestions lists Ezra for Nehemiah; the book opens "The words of Nehemiah". | Ezra | 10,494 |
| Esther | Says nothing about its writer | Mordecai | 5,633 |
| Job | Says nothing about its writer | Moses | 18,099 |
| Psalms | Titles name David in 73 psalms and 6 others in 27 | David and others | 42,683 |
| Proverbs | Names the writer or speaker in its opening: Solomon (Proverbs 1:1) Proverbs 30:1 opens the words of Agur and 31:1 the words of king Lemuel. | Solomon | 15,037 |
| Ecclesiastes | Names the writer by a title only: the Preacher, the son of David (Ecclesiastes 1:1) | Solomon | 5,579 |
| Song of Solomon | Names the writer or speaker in its opening: Solomon (Song of Solomon 1:1) | Solomon | 2,661 |
| Isaiah | Names the writer or speaker in its opening: Isaiah (Isaiah 1:1) | Isaiah | 37,047 |
| Jeremiah | Names the writer or speaker in its opening: Jeremiah (Jeremiah 1:1) Jeremiah 36:4 says Baruch wrote Jeremiah's words from his mouth. | Jeremiah | 42,693 |
| Lamentations | Says nothing about its writer | Jeremiah | 3,411 |
| Ezekiel | Names the writer or speaker in its opening: Ezekiel (Ezekiel 1:3) | Ezekiel | 39,441 |
| Daniel | Says a named person wrote part of it: Daniel (Daniel 7:1) | Daniel | 11,617 |
| Hosea | Names the writer or speaker in its opening: Hosea (Hosea 1:1) | Hosea | 5,183 |
| Joel | Names the writer or speaker in its opening: Joel (Joel 1:1) | Joel | 2,033 |
| Amos | Names the writer or speaker in its opening: Amos (Amos 1:1) | Amos | 4,219 |
| Obadiah | Names the writer or speaker in its opening: Obadiah (Obadiah 1:1) | Obadiah | 669 |
| Jonah | Says nothing about its writer The book tells Jonah's story in the third person. | Jonah | 1,320 |
| Micah | Names the writer or speaker in its opening: Micah (Micah 1:1) | Micah | 3,154 |
| Nahum | Names the writer or speaker in its opening: Nahum (Nahum 1:1) | Nahum | 1,285 |
| Habakkuk | Names the writer or speaker in its opening: Habakkuk (Habakkuk 1:1) | Habakkuk | 1,475 |
| Zephaniah | Names the writer or speaker in its opening: Zephaniah (Zephaniah 1:1) | Zephaniah | 1,615 |
| Haggai | Names the writer or speaker in its opening: Haggai (Haggai 1:1) | Haggai | 1,130 |
| Zechariah | Names the writer or speaker in its opening: Zechariah (Zechariah 1:1) | Zechariah | 6,443 |
| Malachi | Names the writer or speaker in its opening: Malachi (Malachi 1:1) | Malachi | 1,781 |
| Matthew | Says nothing about its writer | Matthew | 23,684 |
| Mark | Says nothing about its writer GotQuestions lists John Mark. | Mark | 15,164 |
| Luke | Writer says "I" but gives no name: a writer who says "it seemed good to me also" (Luke 1:3) | Luke | 25,938 |
| John | Writer says "I" but gives no name: "the disciple which testifieth of these things, and wrote these things" (John 21:24) | John | 19,093 |
| Acts | Writer says "I" but gives no name: the writer of "the former treatise" (Acts 1:1) | Luke | 24,246 |
| Romans | Names the writer or speaker in its opening: Paul (Romans 1:1) | Paul | 9,423 |
| 1 Corinthians | Names the writer or speaker in its opening: Paul (1 Corinthians 1:1) | Paul | 9,462 |
| 2 Corinthians | Names the writer or speaker in its opening: Paul (2 Corinthians 1:1) | Paul | 6,068 |
| Galatians | Names the writer or speaker in its opening: Paul (Galatians 1:1) | Paul | 3,085 |
| Ephesians | Names the writer or speaker in its opening: Paul (Ephesians 1:1) | Paul | 3,023 |
| Philippians | Names the writer or speaker in its opening: Paul (Philippians 1:1) | Paul | 2,184 |
| Colossians | Names the writer or speaker in its opening: Paul (Colossians 1:1) | Paul | 1,980 |
| 1 Thessalonians | Names the writer or speaker in its opening: Paul (1 Thessalonians 1:1) | Paul | 1,838 |
| 2 Thessalonians | Names the writer or speaker in its opening: Paul (2 Thessalonians 1:1) | Paul | 1,022 |
| 1 Timothy | Names the writer or speaker in its opening: Paul (1 Timothy 1:1) | Paul | 2,244 |
| 2 Timothy | Names the writer or speaker in its opening: Paul (2 Timothy 1:1) | Paul | 1,666 |
| Titus | Names the writer or speaker in its opening: Paul (Titus 1:1) | Paul | 896 |
| Philemon | Names the writer or speaker in its opening: Paul (Philemon 1:1) | Paul | 430 |
| Hebrews | Says nothing about its writer GotQuestions lists the writer as unknown, with Paul, Luke, Barnabas or Apollos named as the likeliest. | unknown | 6,897 |
| James | Names the writer or speaker in its opening: James (James 1:1) | James | 2,304 |
| 1 Peter | Names the writer or speaker in its opening: Peter (1 Peter 1:1) | Peter | 2,476 |
| 2 Peter | Names the writer or speaker in its opening: Simon Peter (2 Peter 1:1) | Peter | 1,553 |
| 1 John | Says nothing about its writer | John | 2,517 |
| 2 John | Names the writer by a title only: the elder (2 John 1:1) | John | 298 |
| 3 John | Names the writer by a title only: the elder (3 John 1:1) | John | 294 |
| Jude | Names the writer or speaker in its opening: Jude (Jude 1:1) | Jude | 608 |
| Revelation | Names the writer or speaker in its opening: John (Revelation 1:1) Revelation 1:4 and 1:9 name John again ("I John"). | John | 11,995 |
The book headings in the KJV are not verse text. In the public-domain KJV text counted here, 8 headings put a name on a book whose verses give none. They are Genesis ("The First Book of Moses, called Genesis"), Leviticus ("The Third Book of Moses, called Leviticus"), 1 Samuel ("The First Book of Samuel Otherwise Called the First Book of the Kings"), 2 Samuel ("The Second Book of Samuel Otherwise Called the Second Book of the Kings"), Lamentations ("The Lamentations of Jeremiah"), Matthew ("The Gospel According to St. Matthew"), Mark ("The Gospel According to St. Mark"), 1 John ("The First Epistle General of John").
Where the number 40 comes from
No verse counts the Bible's writers. The figure is a sum of tradition and the text.
GotQuestions.org says the Bible "was written by approximately 40 men of diverse backgrounds over the course of 1500 years," and lists an author for every book. That list holds 33 names, with Hebrews left unknown. They are Moses, Joshua, Samuel, Nathan, Gad, Jeremiah, Ezra, Mordecai, David, Solomon, Isaiah, Ezekiel, Daniel, Hosea, Joel, Amos, Obadiah, Jonah, Micah, Nahum, Habakkuk, Zephaniah, Haggai, Zechariah, Malachi, Matthew, Mark, Luke, John, Paul, James, Peter, Jude. The books themselves name 7 more writers or speakers that the list folds into someone else: Nehemiah, Asaph, the sons of Korah, Heman the Ezrahite, Ethan the Ezrahite, Agur, Lemuel. Add them and the count is 40. That sum is ours, one way to count and not a census: it counts the sons of Korah as one writer and leaves out people the text only mentions, such as Baruch, who wrote down Jeremiah's words.
Other lists land lower. OverviewBible counts 35 traditional authors and says "there really were around 40 authors of the Bible, but the Bible and tradition only call out around 35 by name." Its 35 include a few candidates for anonymous works (Moses, Ezra and Matthew), and it notes that somebody wrote Judges but we don't know who.
Who wrote the most of the Bible?
Share of the King James Version's 790,325 words, grouped by the author tradition gives each book.
Moses leads with 22.1% because tradition gives him the five books of the Law and Job; the Law alone is 19.8%. Exodus 24:4, Numbers 33:2 and Deuteronomy 31:9 each say "Moses wrote" a part: the words of the LORD, the stages of the march, this law. Deuteronomy 34 reports his death and burial. History.com notes that the Talmud answered this by saying Joshua likely wrote the verses about Moses' death, and that Joel Baden of Yale Divinity School calls that "one opinion among many."
In the New Testament, Luke's two books, the Gospel and Acts, hold 50,184 words (27.8% of the New Testament). Paul's 13 letters hold 43,321 (24.0%). On the traditional list, Paul wrote the most books and Luke the most words.
Who wrote the Psalms?
116 of the 150 psalms have a title in the KJV, and 100 of those titles name a person.
Psalm 88 names both the sons of Korah and Heman the Ezrahite, so the rows add to one more than 100. Psalms 72 and 127 read "for Solomon" in the KJV, so a title that names someone is not always a claim about who wrote the psalm.
What tradition and modern scholars say
The names on the Gospels come from early church writers. Irenaeus of Lyon said Matthew "issued a written Gospel among the Hebrews," Mark was "the disciple and interpreter of Peter," Luke "the companion of Paul," and John "the disciple of the Lord" (Against Heresies 3.1.1). The Gospel texts themselves name no writer, and The Conversation notes that they "weren't attributed to these figures until the second and third centuries."
Most modern scholars read the authorship differently. History.com reports that most scholars today agree the Old Testament's stories and laws were passed down orally and written down by different schools of authors, starting around the 7th century BC. It also reports that scholars agree on the authenticity of only seven letters as Paul's: Romans, 1 Corinthians, 2 Corinthians, Galatians, Philippians, 1 Thessalonians, Philemon. Those seven hold 32,490 KJV words, 18.0% of the New Testament, against 24.0% for all 13.
So the count depends on the question. The text names 24 writers. Tradition names about 40. A historian can identify fewer, because many books passed through editors and scribes whose names were never recorded.
Tradition also answers a different question. GotQuestions.org says that, above the human writers, the Bible was written by God, who guided them while they used their own styles. The Bible says as much of itself: "All scripture is given by inspiration of God" (2 Timothy 3:16) and "holy men of God spake as they were moved by the Holy Ghost" (2 Peter 1:21). Counting the people does not settle that either way.
Questions about who wrote the Bible
How many authors wrote the Bible?
Tradition counts about 40 authors, but the Bible gives no total. In the King James Version, 40 of its 66 books name a writer or speaker in their own verses (24 different people), and 19 books never say who wrote them. The common Protestant list names 33 people; the books name 7 more, which makes 40.
Who wrote the most books of the Bible?
Paul, by the traditional count: 13 New Testament letters open with his name, from Romans to Philemon (scholars accept seven of them as his, see below). By words, Moses comes first: the five books of the Law, plus Job, which GotQuestions.org also gives to him, fill 174,936 words, 22.1% of the King James Version (19.8% without Job).
Did Luke or Paul write more of the New Testament?
Luke, by words, if tradition is right about both. The Gospel of Luke and Acts hold 50,184 KJV words, 27.8% of the New Testament. Paul's 13 letters hold 43,321, 24.0%. Neither book of Luke names its writer. Acts 1:1 links them, since "the former treatise" went to the same Theophilus as Luke 1:3, and tradition credits both to Luke.
Which books of the Bible don't say who wrote them?
19 books: Genesis, Leviticus, Judges, Ruth, 1 Samuel, 2 Samuel, 1 Kings, 2 Kings, 1 Chronicles, 2 Chronicles, Ezra, Esther, Job, Lamentations, Jonah, Matthew, Mark, Hebrews, 1 John. Together they hold 309,008 words, 39.1% of the King James Version. Their usual authors come from later tradition.
How many people wrote the New Testament?
Tradition names 8: Matthew, Mark, Luke, John, Paul, James, Peter, Jude, with the writer of Hebrews unknown. The New Testament text itself names 5 of them in its letters and Revelation; the four Gospels and Acts never name their writers.
Who wrote the Psalms?
The psalm titles name a person for 100 of the 150 psalms. The counts are David 73, Asaph 12, the sons of Korah 11, Solomon 2, Moses 1, Heman the Ezrahite 1, Ethan the Ezrahite 1, and Psalm 88 names both Heman and the sons of Korah. The other 50 psalms have no title or a title with no name.
Sources
- The King James Version (1769), public domain: every verse quoted and every word count on this page, counted by scripts/build-authors.mjs from the text at github.com/seven1m/open-bibles (counted 2026-10-23).
- GotQuestions.org, Who were the authors of the books of the Bible?: the traditional author column and the "approximately 40" figure (read 2026-10-23).
- OverviewBible, Who Wrote the Bible? Meet the 35 (Traditional) Authors: the count of 35 (read 2026-10-23).
- Irenaeus, Against Heresies 3.1 (New Advent translation): the second-century names on the four Gospels (read 2026-10-23).
- The Conversation, Who wrote the Bible?: when the Gospels were first attributed to Matthew, Mark, Luke and John (read 2026-10-23).
- History.com, Who Wrote the Bible?: the modern scholarly view of the first five books and of Paul's seven undisputed letters (read 2026-10-23).
See every book's chapters and verses on the books of the Bible, or put them in order with the books of the Bible in order. Find the longest book in the Bible, or read who speaks in Proverbs on how many proverbs are there. More counts are on the Bible by the numbers.
Counted by Bible Says About from the full public-domain text of the King James Version (1769 edition) and the World English Bible. Verse text only: headings and psalm titles are left out. A word is a run of letters: a hyphenated name like Beer-sheba counts as two, and an apostrophe stays inside its word (LORD'S is one). Matching ignores capital letters. Data compiled 2026-10-23.