The books that constitute the Bible were agreed upon in the 4th century -- only when Martin Luther decided to chop and change the Bible did the Council of Trent STOP the sacrilege and declare the canon closed. Interestingly this canon is the same as what the Orthodox (who were in schism with the Western Church at the time) professed.
More revisionist history. Jerome clearly referred to the Apocryphal or Deuterocanonical books as to be " read in the church, but not to be cited for proof texts of doctrine." He separated the Apocryphal books from the rest of the Hebrew OT saying that "Whatever falls outside these (Hebrew texts) . . . are not in the canon." He added that the books may be read for edification, but not for ecclesiastical dogmas.
Luther merely returned these books to the status that Jerome had placed them.
A final irony in this matter is the fact that even Cardinal Cajetan, who opposed Luther at Augsburg in 1518, published a Commentary on All the Authentic Historical Books of the Old Testament (1532) in which he did not include the Apocrypha.