If you've ever picked up a Catholic Bible and compared it to a Protestant Bible, you've noticed something: there are extra books. Seven extra books in the Catholic Old Testament that most Protestants have never heard of — Tobit, Judith, Wisdom, Sirach, Baruch, and 1–2 Maccabees. Eastern Orthodox Bibles go further still. These aren't errors or additions — they reflect a 2,000-year debate over which books belong in the canon (the authorized list of Scripture).
Understanding the differences matters for every Christian. If you use the Catholic Catechism, it quotes from Wisdom and Sirach. If your pastor cites a Maccabees passage, that's likely in a Catholic or Orthodox study Bible but not in your standard Protestant edition.
Key Takeaways
- Protestant Bibles contain 66 books (39 OT + 27 NT); Catholic Bibles 73; Greek Orthodox 76+.
- All three share the identical 27-book New Testament.
- The extra Catholic books are called deuterocanonical (Catholic/Orthodox) or apocrypha (Protestant).
- The split traces to the Reformation (16th century) and competing views of the Septuagint.
- Your tradition determines which edition to use; Bible Expert carries editions for all three.
What Is the Biblical Canon — and Who Decides It?
The biblical canon (from Greek kanōn, meaning "rule" or "standard") is the official list of books recognized as Scripture. The New Testament canon was largely settled by the late 4th century, with the Council of Carthage (397 CE) listing the 27 books all Christians use today (Encyclopedia Britannica). The Old Testament canon, however, remained disputed.
The core issue: the Hebrew Bible (the Tanakh) contains 39 books. The Septuagint (LXX) — the ancient Greek translation of the Jewish Scriptures, widely used in the early Church — contained additional books not in the Hebrew canon. Early Church Fathers disagreed on which list to follow.
Citation Capsule — The Canon Debate The New Testament canon was effectively settled by the late 4th century (Council of Carthage, 397 CE). The Old Testament debate turned on which source text to follow: the Hebrew Tanakh (39 books) or the Greek Septuagint (LXX), which contained additional writings. Catholics and Orthodox kept the LXX-extended list; Protestant Reformers returned to the Hebrew canon (Britannica).
The 7 Deuterocanonical Books: What They Are
The seven books in Catholic and most Orthodox Bibles but absent from Protestant Bibles are:
| Book | Contents | Approx. Date |
|---|---|---|
| Tobit | Folktale of a faithful Jewish family in exile; angels and healing | c. 225–175 BCE |
| Judith | Story of a Jewish widow who saves her people by killing an enemy general | c. 150–100 BCE |
| 1 Maccabees | Historical account of the Maccabean revolt against Seleucid rule (175–134 BCE) | c. 100 BCE |
| 2 Maccabees | Theological retelling of the same events; origin of Hanukkah story | c. 124 BCE |
| Wisdom of Solomon | Philosophical poem on wisdom, justice, and the afterlife | c. 100–50 BCE |
| Sirach (Ecclesiasticus) | Practical wisdom sayings, similar to Proverbs; widely quoted in Catholic liturgy | c. 180 BCE |
| Baruch | Letter attributed to Jeremiah's secretary; includes a wisdom poem | c. 150 BCE |
Plus additions to Esther (Greek additions) and Daniel (Susanna, Bel and the Dragon, Song of the Three Young Men).
Sources: Oxford Biblical Studies Online; Text & Canon Institute, 2023.
These books aren't "extra" from a Catholic or Orthodox perspective — they were part of the Church's Scripture for over a millennium before the Reformation. The *Catechism* quotes Sirach and Wisdom dozens of times. The feast of Hanukkah's origin story comes from 1–2 Maccabees. Calling them "apocryphal" is specifically a Protestant framing; Catholics and Orthodox prefer "deuterocanonical" (meaning "second canon" — not lesser, but recognized in a second stage).Why Did the Protestant Reformers Remove Them?
The short answer: Martin Luther and the Reformers returned to the Hebrew canon (the Tanakh) as the authoritative source for the Old Testament. Their reasoning:
- The Hebrew Bible — as maintained by Jewish communities since the 1st century — contained only 39 books.
- The deuterocanonical books were written after the Hebrew prophetic tradition closed, mostly in Greek.
- St. Jerome himself (the Latin Vulgate translator) had noted some of these books were not in the Hebrew Bible — though he still translated them.
- Reformers rejected doctrines they found in these books (notably prayers for the dead in 2 Maccabees 12:46, which supports the Catholic doctrine of Purgatory).
The Westminster Confession of Faith (1646), Chapter I.3, explicitly names 66 canonical books and states that the Apocrypha, "not being of divine inspiration, are no part of the Canon of Scripture" (CCEL, Westminster Confession).
Citation Capsule — The Reformation Split The Protestant Reformers (Luther, Calvin, Zwingli) removed 7 books from the Old Testament canon and placed them in a separate "Apocrypha" section — or omitted them entirely — based on the 39-book Hebrew canon. The Council of Trent (1546) formally defined the 73-book Catholic canon in response, making the split official (Text & Canon Institute, 2023).
The Council of Trent (1546) responded by formally defining the 73-book Catholic canon as dogma — the first time the Catholic Church had issued an infallible pronouncement on the canon's exact contents.
Eastern Orthodox: The Largest Canon
Eastern Orthodox Bibles go further than Catholic ones. They follow the Septuagint (LXX) even more closely and include books that even Catholic Bibles don't always contain:
| Additional OT books in Orthodox Bibles | Note |
|---|---|
| 1 Esdras | Parallel to parts of Ezra/Nehemiah |
| 3 Maccabees | Not about Maccabees — about a miracle in Egypt; used in Byzantine liturgy |
| Prayer of Manasseh | Short prayer; often in Protestant Apocrypha too |
| Psalm 151 | A psalm attributed to David; in the LXX but not the Hebrew |
Some Slavonic Orthodox Bibles add 4 Maccabees and 2 Esdras. The Ethiopian Tewahedo Orthodox Church has the largest canon of any Christian tradition — including books like 1 Enoch and Jubilees (Text & Canon Institute, 2023).
Total: 76+ books for most Greek/Russian/Serbian/Romanian Orthodox; more for Ethiopian.
The Orthodox Study Bible (Wikipedia) is the standard English edition for Orthodox readers. Its OT is translated from the Septuagint; the NT uses the New King James Version.
Citation Capsule — Orthodox Canon Eastern Orthodox churches follow the Septuagint Old Testament and typically recognize 76+ books, including 1 Esdras, 3 Maccabees, Prayer of Manasseh, and Psalm 151. The Ethiopian Tewahedo canon is the largest of any Christian tradition. The standard English Orthodox Bible is the Orthodox Study Bible (Wikipedia).
Which Edition Should You Read?
| Tradition | Recommended English Bible |
|---|---|
| Protestant (Evangelical/Reformed) | NIV, ESV, KJV, NLT, CSB — all 66-book editions |
| Protestant (Mainline) | NRSV (includes Apocrypha in interconfessional editions) |
| Catholic | NABRE (USCCB standard), NRSV-CE, Jerusalem Bible, Douay-Rheims |
| Eastern Orthodox | Orthodox Study Bible (NKJV NT + LXX OT) |
| Anglican | NRSV with Apocrypha; also Common English Bible (CEB) |
| Interconfessional study | NRSV with Apocrypha; compare with any Protestant edition |
The NABRE (New American Bible Revised Edition) is the USCCB-approved Catholic standard for Mass and study in the United States (bible.usccb.org). The Jerusalem Bible and its New Jerusalem Bible revision are popular internationally and were used by J.R.R. Tolkien (who worked on the translation).
The practical tip for ecumenical Bible study groups: use the NRSV with Apocrypha. It's the most widely accepted across traditions — Catholic, Orthodox, Anglican, mainline Protestant — and the deuterocanonical books appear in a separate section that Protestant participants can read or skip. Bible Expert's multi-translation comparison works across all major editions.Do the Extra Books Change Core Doctrine?
Most shared Christian doctrines — the Trinity, the Incarnation, the Resurrection, salvation through Christ — are grounded in the New Testament, which all three traditions share identically. The deuterocanonical books primarily affect:
- Purgatory (2 Maccabees 12:46 references prayers for the dead)
- The canonicity of prayers for the departed (same text)
- Some wisdom literature (Wisdom, Sirach) cited in Catholic moral teaching
- Hanukkah background (1–2 Maccabees)
Protestant, Catholic, and Orthodox Christians agree on far more than they disagree — the 27-book New Testament is shared fully. The Old Testament canon difference is real but doesn't divide the core of Christian faith.
Frequently Asked Questions
Why does the Catholic Bible have more books than the Protestant Bible?
The Catholic Bible includes 7 deuterocanonical books present in the Greek Septuagint (LXX) but absent from the Hebrew Tanakh. The Protestant Reformers returned to the 39-book Hebrew canon; the Council of Trent (1546) formally defined the 73-book Catholic canon in response (Text & Canon Institute, 2023).
Are the deuterocanonical books historically accurate?
They vary. 1–2 Maccabees are valuable historical sources for the Maccabean period (175–134 BCE) and are used by secular historians. Tobit and Judith are generally treated as literary/theological works rather than strict history. Wisdom and Sirach are wisdom literature, not narrative history.
What Bible do Orthodox Christians use in English?
The standard English Orthodox Bible is the Orthodox Study Bible, which uses the New King James Version for the New Testament and a translation from the Septuagint for the Old Testament. It includes 76+ books (Wikipedia, Orthodox Study Bible).
Can Catholics read a Protestant Bible?
Yes — many Catholics read NIV, ESV, or NLT for personal devotion. For official study, Mass readings, and catechesis, the NABRE is the approved Catholic edition in the U.S. Catholic readers should use an edition that includes the deuterocanonical books for complete access to what the Church quotes.
Do all Christian traditions agree on the New Testament?
Yes. The 27-book New Testament — Matthew through Revelation — is identical across Catholic, Protestant, and Orthodox traditions. The canon disputes involve only the Old Testament. The NT was effectively settled by the late 4th century (Britannica).
What are the 7 deuterocanonical books?
Tobit, Judith, 1 Maccabees, 2 Maccabees, Wisdom of Solomon, Sirach (Ecclesiasticus), and Baruch — plus Greek additions to Esther and Daniel. These appear in Catholic Bibles (NABRE, Jerusalem Bible, NRSV-CE) and most Orthodox Bibles, but not in standard Protestant editions.