How Many Books Are There in the Bible? A Memory Method

The Quick Count by Christian Tradition

The number of books in the Bible depends on which tradition counts them. Protestant, Catholic, Orthodox, and Hebrew traditions each use a different total, based on which texts they accept as scripture.

Protestant Bible: 66 Books

The Protestant Bible contains 66 books, split into two parts.

• Old Testament: 39 books
• New Testament: 27 books

The Old Testament follows the Hebrew Masoretic Text. It covers law, history, poetry, and prophecy written before Jesus.

The New Testament covers the life of Jesus, the early church, and letters to Christian communities. This 66-book count became standard during the Protestant Reformation.

Catholic Bible: 73 Books

The Catholic Bible contains 73 books. It includes all 66 Protestant books plus seven more in the Old Testament.

These seven extra books are called deuterocanonical books by Catholics. Protestants call them the Apocrypha.

The seven deuterocanonical books:

1. Tobit
2. Judith
3. 1 Maccabees
4. 2 Maccabees
5. Wisdom of Solomon
6. Sirach
7. Baruch

These books came from the Septuagint, a Greek translation of Hebrew scripture. The Council of Trent confirmed them as canonical in the 1500s.

Orthodox Canons and Varying Totals

Eastern Orthodox Bibles include more books than Catholic Bibles. The total ranges from 76 to 78 books, depending on the specific Orthodox church.

Common Orthodox additions beyond the Catholic canon:

• 3 Maccabees
• 1 Esdras
• Psalm 151
• Prayer of Manasseh

Some Orthodox traditions place 4 Maccabees in an appendix rather than the main text. Greek, Russian, and Ethiopian Orthodox churches each have slightly different lists. Ethiopian Orthodox Bibles can reach 81 books, the highest count among major Christian traditions.

The Hebrew Bible and Its 24-Book Count

The Hebrew Bible, called the Tanakh, contains 24 books. This number differs from the Protestant Old Testament's 39 books, though both cover the same content.

The difference comes from how books are grouped. The Hebrew Bible combines some books that Christian Bibles split apart.

Examples of combined books:

• 1 and 2 Samuel count as one book in Hebrew
• 1 and 2 Kings count as one book in Hebrew
• The twelve minor prophets count as one book in Hebrew

The Tanakh has three sections: Torah (Law), Nevi'im (Prophets), and Ketuvim (Writings). This structure shaped how later Christian Bibles organized their Old Testament.

The 39 Books of the Old Testament

The Old Testament tells the story of creation, God's covenant with Israel, and the rise of the prophets. It is split into four main parts: the Law, history, poetry, and prophecy.

The Torah or Pentateuch

The Torah, also called the Pentateuch, includes the first five books of the Old Testament. Moses is traditionally credited as the author of these books.

These five books lay out the covenant between God and Israel. They also introduce the Law that shapes the rest of the Old Testament.

Israel's Historical Books

These 12 books cover Israel's history from entering the promised land to the return from exile.

• Joshua – Israel conquers and settles the land
• Judges – Cycles of disobedience and deliverance
• Ruth – A story of loyalty and redemption
• 1 Samuel and 2 Samuel – Rise of the monarchy under Samuel, Saul, and David
• 1 Kings and 2 Kings – The kingdom splits and eventually falls
• 1 Chronicles and 2 Chronicles – A retelling of Israel's history with a focus on worship
• Ezra – Rebuilding the temple after exile
• Nehemiah – Rebuilding Jerusalem's walls
• Esther – A Jewish queen saves her people in Persia

This group shows how Israel's kings and leaders shaped the nation's identity.

Poetry and Wisdom Literature

This section includes five books that focus on worship, wisdom, and human experience rather than historical events.

These books ask different kinds of questions than the historical books. They focus on how people relate to God and to each other in daily life.

Major and Minor Prophets

The prophetic books are split into two groups based on length, not importance. The Major Prophets include five longer books.

Major Prophets:

• Isaiah
• Jeremiah
• Lamentations
• Ezekiel
• Daniel

Minor Prophets:

• Hosea
• Joel
• Amos
• Obadiah
• Jonah
• Micah
• Nahum
• Habakkuk
• Zephaniah
• Haggai
• Zechariah
• Malachi

Together, these 17 books make up the prophetic section of the Old Testament's 39 total books. Each prophet delivered messages about Israel's faithfulness, judgment, and hope for restoration.

The 27 Books of the New Testament

The New Testament tells the story of Jesus Christ, the growth of the early church, and letters that guide Christian belief and practice. It is organized into five parts: the Gospels, Acts, Paul's letters, the general letters, and Revelation.

The Four Gospels and Acts

The first five books of the New Testament cover the life of Jesus and the start of the church.

All four Gospels describe the same events from different angles, according to this complete guide to New Testament books. Acts picks up where the Gospels end, following the apostles as they build the early church.

Paul's Letters to Churches and Leaders

Paul wrote 13 letters, called epistles, to churches and individual leaders.

Why Bible Book Totals Differ

The number of books in the Bible changes depending on which tradition compiled it, since Catholic, Protestant, and Orthodox editions each recognize a different set of writings as scripture. These differences come from historical decisions about authority, language, and how certain texts were grouped or divided.

Canon, Authority, and Community Tradition

A "canon" is the official list of books a religious community accepts as scripture.

Different communities formed their canons at different times and under different circumstances:

• Jewish communities settled on the Hebrew Bible, which became the basis for the Protestant Old Testament.
• Early Christian churches used the Greek Septuagint, which included extra books not found in the Hebrew text.
• Catholic and Orthodox councils later confirmed these extra books as scripture.
• Protestant reformers rejected them centuries later during the Reformation.

Each tradition based its decision on which texts it believed carried divine authority. This is the main reason total book counts differ between Bibles today.

Deuterocanonical Books in Catholic Bibles

The Catholic Bible includes seven extra Old Testament books called the Deuterocanonical books. The word means "second canon," since these books were formally recognized later than the original Hebrew texts.

The Catholic Bible also includes additional sections in Esther and Daniel that do not appear in Protestant editions. These texts came from the Greek Septuagint and were formally confirmed as scripture by the Catholic Church at the Council of Trent in the 1500s.

The Apocrypha in Protestant Editions

Protestant Bibles do not include the Deuterocanonical books. Instead, Protestants refer to these writings as the Apocrypha, meaning "hidden" or non-canonical.

Reasons Protestant reformers gave for excluding them:

1. The books were not part of the Hebrew Bible used by Jewish communities.
2. Neither Jesus nor the apostles quoted from them directly.
3. Some content conflicted with teachings found elsewhere in scripture.

As a result, the Protestant Old Testament contains 39 books instead of the 46 found in Catholic Bibles. Some historical Protestant editions still printed the Apocrypha as a separate section for reference, though not as scripture.

Different Grouping and Ordering Practices

Book totals can also shift slightly because of how texts are grouped, not just which texts are included.

Examples of grouping differences:

• The Hebrew Bible combines Ezra and Nehemiah into a single book, while Christian Bibles list them separately.
• The twelve Minor Prophets appear as one combined book in the Hebrew Bible but as twelve separate books in Christian Old Testaments.
• Eastern Orthodox Bibles divide and label some historical books differently than Catholic or Protestant editions.

These organizational choices do not add or remove content. They simply change how the same material is counted, which explains why total book numbers can vary even among traditions that use similar texts.

A Practical Way to Remember the Books

Remembering all 66 books of the Bible works best when the process moves from broad structure to fine detail, using short daily sessions rather than long study blocks. A clear system helps a reader recall the books of the Bible in order and connect each one to its place in scripture.

Learn the Major Divisions Before Individual Titles

The Bible splits into two testaments and several smaller groups. Learning these categories first gives every book a "home" before its name gets memorized.

Once these seven groups are set, adding book names becomes a matter of filling in slots, not memorizing a random list.

Use Short Recall Sessions Instead of Long Reading Plans

Short, repeated sessions build stronger recall than one long study period. This works through a simple loop: encoding → retrieval → reinforcement.

Recommended structure:

1. Day 1 – Read the group name and its five to six book titles aloud.
2. Day 2 – Recite the same list from memory before checking it.
3. Day 3 – Remove one book name and try to recall it from context.
4. Day 4 – Recite the full list without looking.

Five minutes a day works better than one hour once a week. This matches how memorization tactics with consistent daily practice are shown to build long-term recall.

Connect Each Group to Its Central Story

Each section of the Bible centers on one theme. Linking a group to its main idea gives the list meaning instead of just order.

• Torah – God's covenant and law given through Moses.
• Historical Books – Israel's kings, judges, and struggles with faith.
• Wisdom Books – Practical wisdom for daily life and worship.
• Prophets – Calls to return to God's covenant.
• Gospels – The gospel message through Jesus' life and teaching.
• Epistles – Guidance for the early church.

This method turns a list of names into a short summary of scripture's overall message.

Build a Repeatable Review Routine

A fixed weekly routine keeps the books from fading out of memory. The table below compares common review methods.

A basic weekly cycle:

1. Monday–Wednesday – Review one testament section per day.
2. Thursday – Recite all groups learned so far, aloud.
3. Friday – Write the full list from memory, then check against scripture.
4. Weekend – Rest, then repeat the cycle the following week.

This kind of steady, low-effort repetition is what separates short-term memorization from long-term retention of the books of the Bible.

Frequently Asked Questions

The number of books in the Bible depends on which tradition compiled it, and each answer connects to specific historical councils, translation choices, and regional practices. Below are direct answers to the most common questions about biblical book counts, testament divisions, and canon differences.

How many books are in the Old Testament?

The Old Testament contains 39 books in Protestant and Catholic Bibles.

Catholic Bibles add extra books to this count, which raises their Old Testament total to 46. Eastern Orthodox Bibles include even more, reflecting broader lists tied to their own historical canon traditions.

How many books are in the New Testament?

The New Testament has 27 books across all major Christian traditions. This number does not change between Protestant, Catholic, or Orthodox Bibles.

These 27 books were written in Greek and cover topics from the life of Jesus to letters sent to early churches, a structure explained in detail through common Bible book questions.

Why do Catholic Bibles have more books than Protestant Bibles?

Catholic Bibles include seven extra Old Testament books, known as the Apocrypha or Deuterocanonical books.

• Tobit
• Judith
• 1 and 2 Maccabees
• Wisdom
• Sirach
• Baruch

These books appeared in the Greek Septuagint, an early Old Testament translation used by early Christians. During the Reformation, Protestant leaders removed these books because they were not part of the original Hebrew canon.

This split explains why Catholic Bibles total 73 books while Protestant Bibles total 66, a difference rooted in decisions made during the Reformation.