Development of the Old Testament canon "Apocrypha" ("hidden"). To counter Luther's "heresy", the fourth session of the Catholic Council of Trent in 1546 confirmed that the deuterocanonical books were equally authoritative as the protocanonical in the Canon of Trent in the year Luther died. Following Jerome's "Veritas Hebraica" (truth of the Hebrew) principle, the Protestant Old Testament consists of the same books as the Hebrew Bible, but the order and division of the books are different. Protestants number the Old Testament books at 39, while the Hebrew Bible numbers the same books as 24. The Hebrew Bible counts Samuel, Kings, and Chronicles as one book each,
Development of the Old Testament canon the New Testament) rather than upon Jerome's translation into Latin, which at the time was the Bible of the Catholic Church. The reformers saw the Apocrypha at variance with the rest of Scripture. The Roman Catholic Church uses them to support the doctrine of Purgatory, for prayers and Masses for the dead (), and for the efficacy of good works in attaining salvation (; ), things that Protestants then and today deem to be blatantly contradicting other parts of the Bible. Luther did remove the deuterocanonical books from the Old Testament of his translation of the Bible, placing them in