One reason why selecting a Catholic edition of the Bible is crucial is ensuring that it contains the proper translations of the right books. There are differences between Protestant and Catholic Bibles that are as foundational as what is in them. While almost all versions agree on the 27 books in the New Testament, the Old Testament varies. Protestant Bibles have only 39 books, while Catholic Bibles add seven more: Tobit, Judith, 1 and 2 Maccabees, Wisdom, Sirach and Baruch. Additionally, there are sections of the books of Esther and Daniel that are only found in Catholic Bibles. These books are called the deuterocanonical books. The Catholic Church believes these books are inspired by the Holy Spirit and includes them.