The Deuterocanonical Books: Why the Catholic Bible Has 73 Books

Why the Numbers Are Different

If you have ever compared a Catholic Bible with a Protestant one, you may have noticed that the Catholic version contains seven books that simply do not appear in the Protestant edition — and that some books like Daniel and Esther are longer. These additional texts are called deuterocanonical books by Catholics (from the Greek, meaning "second canon") and the Apocrypha by Protestants. The difference is not a translation issue. It is a canon issue — a disagreement about which books belong in the Bible at all.

The Seven Deuterocanonical Books

The seven books are: Tobit, Judith, 1 Maccabees, 2 Maccabees, Wisdom of Solomon, Sirach (also called Ecclesiasticus or Ben Sira), and Baruch. In addition, the Catholic Old Testament contains longer versions of Daniel (including Susanna, Bel and the Dragon, and the Prayer of Azariah) and Esther (with six additional chapters).

When Were These Books Written and Used?

These books were composed primarily between approximately 300 and 50 BC, the period between the Old and New Testaments. They were part of the Septuagint — the Greek translation of the Hebrew Scriptures completed around 250–150 BC in Alexandria, Egypt. The Septuagint was the Bible of the early Church. The Apostles quoted from it. The New Testament cites or alludes to it hundreds of times. When Paul quotes Scripture in his letters, he is almost always quoting the Septuagint.

Why Did the Protestant Reformers Remove Them?

In the 16th century, Martin Luther and the Protestant Reformers chose to align the Old Testament canon with the Hebrew Bible as defined by rabbinic Judaism after the destruction of the Temple in 70 AD. The rabbis had excluded books written primarily in Greek or without a surviving Hebrew original. Luther placed these books in a separate section he called Apocrypha, writing that they were "not equal to Holy Scripture, but useful and good to read."

The theological motivation was not purely academic. 2 Maccabees 12:46 explicitly supports praying for the dead — a foundation for the doctrine of Purgatory. Tobit contains references to the intercession of angels. Sirach speaks in ways that support Catholic views on free will and merit. Removing these books conveniently removed some of their most challenging texts.

What the Catholic Church Decided

The Catholic Church formally defined the 73-book canon at the Council of Trent (1546), in response to the Protestant challenge. This was not a new invention — the Council was confirming what had been the received canon of the Western Church since at least the Councils of Carthage (397 and 419 AD), which had included all 73 books.

What Is in These Books?

Tobit is a beautiful family story of faith, marriage, and God's providential care. It contains the earliest form of the Golden Rule and a model prayer of repentance. Judith is a heroic story of a widow who saves Israel through courage and faith. Wisdom of Solomon contains some of the most philosophically sophisticated reflection on the soul, immortality, and God's nature in all of Scripture. Sirach rivals Proverbs in its practical wisdom about family, work, friendship, and prayer. 1 and 2 Maccabees provide the historical and theological account of the Maccabean revolt against Greek oppression — the background to Hanukkah — and include the martyrdom accounts that shaped early Christian understanding of suffering and resurrection. Baruch contains a profound prayer of repentance and a poem on Wisdom that anticipates the Prologue of John.

Should Catholics Read These Books?

Absolutely. Catholics who skip the deuterocanonical books are missing seven books their Church has always regarded as the inspired Word of God. They are not supplementary. They are Scripture.