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TheologyFebruary 20, 2026

Why Catholics Have 73 Books in the Bible (and Protestants Have 66)

Understand the difference between Catholic and Protestant Bibles. Learn why Catholics have 7 more books—and why it matters.

M
MyPrayerTower Team
9 min read Theological Reflection

Why does the Catholic Bible have 73 books while the Protestant Bible has 66? Let's explore.


The Difference

The Catholic Old Testament

Catholics have 46 Old Testament books:

  • 39 books (same as Protestants)
  • 7 "deuterocanonical" books

The Protestant Old Testament

Protestants have 39 Old Testament books—no deuterocanonical books.

The New Testament

Both have 27 books—identical.


What Are the Deuterocanonical Books?

The 7 Books

  1. Tobit
  2. Judith
  3. Wisdom
  4. Sirach (Ecclesiasticus)
  5. Baruch
  6. 1 Maccabees
  7. 2 Maccabees (Plus parts of Daniel and Esther)

The History

These books were part of the Greek Septuagint (the Bible used in the early Church). They were included in the Latin Vulgate (St. Jerome's translation).


Why the Difference?

The Reformation

In the 1500s, Protestant reformers removed these books—mainly because some Protestant leaders didn't consider them authoritative.

The Council of Trent

In response, the Catholic Church affirmed these books at the Council of Trent (1546).


Conclusion: Same Core

Despite the difference, both Catholic and Protestant Bibles contain the same core message—God's love in Jesus Christ.

Lord, help us to see past our differences to Your truth. Amen.


Explore the Bible:



A Prayer for Grace

As you reflect on these spiritual truths, we invite you to join us in this prayer:

"Lord Jesus, we thank You for the wisdom of the Church and the witness of the saints. Grant us the grace to live out our faith with joy and perseverance. May our prayers be a sweet incense rising to Your throne, and may Your peace, which surpasses all understanding, guard our hearts and minds in Christ Jesus. Amen."


Deepen Your Spiritual Journey

If you found this reflection helpful, we invite you to explore more ways to strengthen your faith with MyPrayerTower:

May God bless you and keep you always in His grace.

"O Mary, conceived without sin, pray for us who have recourse to thee."
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