Answer: The Bible was written by approximately 40 men over the course of 1500 years. Isaiah was a prophet, Ezra was a priest, Matthew was a tax-collector, John was a fisherman, Paul was a tentmaker, Moses was a shepherd. Despite being written by approximately 40 authors over approximately 1500 years, the Bible does not contradict itself and does not contain any errors. The authors all present different perspectives, but they all proclaim the same one true God, and the same one way of salvation (John 14:6; Acts 4:12). Few of the books of the Bible specifically name their author. Here are the books of the Bible along with the name of who is most assumed by Biblical scholars to be the author, along with the approximate date of authorship:
OLD TESTIMENT:
Genesis, Exodus, Leviticus, Numbers, Deuteronomy = Moses - 1400 B.C.
Joshua = Joshua - 1350 B.C.
Judges, Ruth, 1 Samuel, 2 Samuel = Samuel / Nathan / Gad - 1000 - 900 B.C.
1 Kings, 2 Kings = Jeremiah - 600 B.C.
1 Chronicles, 2 Chronicles, Ezra, Nehemiah = Ezra - 450 B.C.
Esther = Mordecai - 400 B.C.
Job = Moses - 1400 B.C.
Psalms = several different authors, mostly David - 1000 - 400 B.C.
Proverbs, Ecclesiastes, Song of Solomon = Solomon - 900 B.C.
Isaiah = Isaiah - 700 B.C.
Jeremiah, Lamentations = Jeremiah - 600 B.C.
Ezekiel = Ezekiel - 550 B.C.
Daniel = Daniel - 550 B.C.
Hosea = Hosea - 750 B.C.
Joel = Joel - 850 B.C.
Amos = Amos - 750 B.C.
Obadiah = Obadiah - 600 B.C.
Jonah = Jonah - 700 B.C.
Micah = Micah - 700 B.C.
Nahum = Nahum - 650 B.C.
Habakkuk = Habakkuk - 600 B.C.
Zephaniah = Zephaniah - 650 B.C.
Haggai = Haggai - 520 B.C.
Zechariah = Zechariah - 500 B.C.
Malachi = Malachi - 430 B.C.
NEW TESTIMENT:
Matthew = Matthew - 55 A.D.
Mark = John Mark - 50 A.D.
Luke = Luke - 60 A.D.
John = John - 90 A.D.
Acts = Luke - 65 A.D.
Romans, 1 Corinthians, 2 Corinthians, Galatians, Ephesians, Philippians, Colossians, 1 Thessalonians, 2 Thessalonians, 1 Timothy, 2 Timothy, Titus, Philemon = Paul - 50-70 A.D.
Hebrews = unknown, best guesses are Paul, Luke, Barnabas, or Apollos - 65 A.D.
James = James - 45 A.D.
1 Peter, 2 Peter = Peter - 60 A.D.
1 John, 2 John, 3 John = John - 90 A.D.
Jude = Jude - 60 A.D.
Revelation = John - 90 A.D.
