How many books are there in old and new testament

In the Christian Bible, there are:

Old Testament (OT):

1. Pentateuch (5 books):
   • Genesis
   • Exodus
   • Leviticus
   • Numbers
   • Deuteronomy
2. Historical Books (12 books):
   • Joshua
   • Judges
   • Ruth
   • 1 Samuel
   • 2 Samuel
   • 1 Kings
   • 2 Kings
   • 1 Chronicles
   • 2 Chronicles
   • Ezra
   • Nehemiah
   • Esther
3. Wisdom Literature (5 books):
   • Job
   • Psalms
   • Proverbs
   • Ecclesiastes
   • Song of Solomon
4. Major Prophets (5 books):
   • Isaiah
   • Jeremiah
   • Lamentations
   • Ezekiel
   • Daniel
5. Minor Prophets (12 books):
   • Hosea
   • Joel
   • Amos
   • Obadiah
   • Jonah
   • Micah
   • Nahum
   • Habakkuk
   • Zephaniah
   • Haggai
   • Zechariah
   • Malachi

Total Old Testament books: 39

New Testament (NT):

1. Gospels (4 books):
   • Matthew
   • Mark
   • Luke
   • John
2. Acts of the Apostles (1 book):
   • Acts
3. Epistles (21 books):
   • Romans
   • 1 Corinthians
   • 2 Corinthians
   • Galatians
   • Ephesians
   • Philippians
   • Colossians
   • 1 Thessalonians
   • 2 Thessalonians
   • 1 Timothy
   • 2 Timothy
   • Titus
   • Philemon
   • Hebrews
   • James
   • 1 Peter
   • 2 Peter
   • 1 John
   • 2 John
   • 3 John
   • Jude
4. Apocalyptic Book (1 book):
   • Revelation

Total New Testament books: 27

In total, there are 66 books in the Christian Bible: 39 in the Old Testament and 27 in the New Testament.