When someone asks about the number of books in the Bible, they often discover the answer depends on which Bible they hold. This seemingly simple question opens the door to understanding different biblical traditions and why these differences exist.
The Bible contains either 66, 73, or 76 books, depending on whether you’re reading a Protestant, Catholic, or Eastern Orthodox version. Each tradition recognizes the same 27 New Testament books, but differs on which Old Testament books belong in the sacred canon.
How Many Books Are in the Bible?
The Protestant Bible contains 66 books total – 39 in the Old Testament and 27 in the New Testament. The Catholic Bible includes 73 books with seven additional Old Testament books, while Eastern Orthodox Bibles typically contain 76 books with even more Old Testament writings included.
All Christian traditions agree completely on the 27 New Testament books. The differences lie entirely in which Old Testament books each tradition considers part of Scripture.
The Protestant Bible: 66 Books
Protestant churches follow the Hebrew Bible’s book count for their Old Testament canon. This decision stems from the Protestant Reformation’s principle of returning to the earliest available sources.
The 39 Old Testament books in Protestant Bibles match exactly with the Hebrew Tanakh, though arranged differently. These include the five books of Moses, historical books like Joshua and Kings, wisdom literature like Psalms and Proverbs, and the major and minor prophets.
The Catholic Bible: 73 Books
Catholic Bibles include seven additional Old Testament books: Tobit, Judith, Wisdom, Sirach, Baruch, and First and Second Maccabees. The Catholic Church also includes additional sections in Daniel and Esther not found in Protestant versions.
These additional books, called the deuterocanonical books by Catholics, were part of the Septuagint – the Greek translation of Hebrew Scriptures used in Jesus’ time. The Council of Trent in 1546 officially confirmed these books as canonical for Catholic believers.
Eastern Orthodox Bibles: 76 Books
Eastern Orthodox churches generally include the same deuterocanonical books as Catholics, plus additional writings like Third and Fourth Maccabees and Psalm 151. Some Orthodox traditions include even more books, such as the Prayer of Manasseh.
Orthodox churches view these books as part of the broader scriptural tradition received from the early church. Different Orthodox communities sometimes vary slightly in their exact canon, but all include more Old Testament books than Protestant Bibles.
Why Do These Differences Exist?
The differences in biblical canons trace back to decisions made in the early centuries of Christianity. Understanding this history helps explain why sincere believers can disagree about which books belong in Scripture.
The Hebrew Canon vs. The Septuagint
Jewish scholars finalized the Hebrew Bible canon around 100 AD, settling on 24 books (equivalent to the Protestant 39 when counted differently). However, many early Christians used the Septuagint, a Greek translation that included additional Jewish writings.
The Septuagint contained books written during the intertestamental period – the roughly 400 years between the Old and New Testaments. These books were widely read and respected in Jewish communities, especially those outside Palestine.
Early Church Practices
Early Christian writers often quoted from deuterocanonical books, treating them as authoritative Scripture. Church fathers like Augustine and Jerome debated which books belonged in the biblical canon, with some accepting the broader Septuagint collection.
The question remained somewhat unsettled for centuries. Different regions of the church sometimes used different collections of biblical books, though the core books were universally accepted.
The Reformation’s Impact
Protestant reformers chose to follow the Hebrew Bible’s book count rather than the Septuagint tradition. They argued for returning to the original Hebrew sources and questioned books not found in the Jewish canon.
Martin Luther initially placed the deuterocanonical books in a separate section, calling them useful for reading but not equal to Scripture. Later Protestant traditions removed these books entirely from their Bibles.
What Books Are in Each Testament?
Breaking down the biblical books by testament and category helps readers understand the Bible’s structure. Each section serves different purposes in revealing God’s character and plan for humanity.
Old Testament Books (All Traditions)
All Christian traditions include these Old Testament books, though they may arrange them differently:
- Torah/Pentateuch (5 books): Genesis, Exodus, Leviticus, Numbers, Deuteronomy
- Historical Books (12 books): Joshua through Esther, chronicling Israel’s history
- Wisdom Literature (5 books): Job, Psalms, Proverbs, Ecclesiastes, Song of Songs
- Major Prophets (5 books): Isaiah, Jeremiah, Lamentations, Ezekiel, Daniel
- Minor Prophets (12 books): Hosea through Malachi
New Testament Books (Universal Agreement)
All Christian traditions accept exactly the same 27 New Testament books. These writings form the foundation of Christian faith and practice across all denominational lines.
- Gospels (4 books): Matthew, Mark, Luke, John – telling Jesus’ life and ministry
- History (1 book): Acts – the early church’s growth and mission
- Paul’s Letters (13 books): Romans through Philemon – foundational Christian theology
- General Letters (8 books): Hebrews through Jude – broader apostolic teaching
- Prophecy (1 book): Revelation – visions of God’s ultimate victory
Does the Number of Books Matter?
While Christians disagree about which books belong in the Old Testament, this disagreement doesn’t undermine the Bible’s central message. All traditions agree on the core truths of Scripture and the complete New Testament witness to Jesus Christ.
Unity in Essential Truths
The deuterocanonical books don’t contradict the universally accepted biblical books or change Christianity’s fundamental doctrines. Protestant, Catholic, and Orthodox believers share the same core beliefs about God, salvation, and Christian living.
The books all traditions accept contain everything necessary for understanding God’s character, humanity’s need for salvation, and Jesus’ work as Savior. Scripture’s essential message remains consistent regardless of which canon a believer follows.
Practical Wisdom for Believers
Christians can appreciate the deuterocanonical books’ historical and spiritual value without feeling threatened by canonical differences. These writings offer insights into Jewish life and thought during the intertestamental period.
Reading these books helps believers understand the world Jesus entered and the hopes His people carried. They contain wisdom about faithful living under persecution and God’s sovereignty over human history.
Focus on What Unites Us
Rather than letting canonical differences divide believers, Christians can focus on the vast biblical territory they share. The 66 books all traditions accept provide more than enough material for a lifetime of spiritual growth.
God’s Word accomplishes its purposes whether someone reads 66, 73, or 76 books. The Holy Spirit works through Scripture to transform hearts and reveal truth, regardless of slight differences in biblical canons.
How to Approach Biblical Differences Wisely
Believers can handle canonical differences with both conviction and humility. Understanding why these differences exist helps Christians engage respectfully with believers from other traditions while remaining faithful to their own understanding of Scripture.
Study with Discernment
Christians benefit from reading broadly while maintaining clear convictions about biblical authority. Exploring the deuterocanonical books can deepen historical understanding without compromising commitment to one’s own canonical tradition.
Good Bible study involves comparing different perspectives and understanding how various Christian traditions interpret Scripture. This approach builds wisdom and prevents narrow-mindedness that mistakes human traditions for divine commands.
Practice Christian Unity
Canonical differences shouldn’t prevent fellowship between believers who share faith in Jesus Christ. The early church’s unity transcended many theological disagreements that seem crucial to modern Christians.
Focus conversations on Jesus’ lordship, salvation by grace, and faithful Christian living – truths all biblical canons clearly teach. These central realities matter far more than debates about specific books’ canonical status.
Whether your Bible contains 66, 73, or 76 books, God calls you to read, study, and obey His Word faithfully. The number of books matters less than your heart’s response to the truth they contain. Scripture transforms lives when believers approach it with faith, expecting God to speak through its pages and guide their steps according to His perfect will.
For more biblical insights and guidance on living out your faith, explore additional Christian resources and discover biblical perspectives on the questions that matter most in your spiritual life.