Biblical canon
Luther chose to place the Biblical apocrypha between the Old and New Testaments. These books and addenda to Biblical canon of the Old Testament are found in the ancient Greek Septuagint but not in the Hebrew Masoretic text. Luther left the translating of them largely to Philipp Melanchthon and Justus Jonas. They were not listed in the table of contents of his 1532 Old Testament, and in the 1534 Bible they were given the well-known title: "Apocrypha: These Books Are Not Held Equal to the Scriptures, but Are Useful and Good to Read". See also Biblical canon, Development of the Christian Biblical canon, and Biblical Apocrypha.