Development of the New Testament canon 1290 to include in the Armenian canon several apocryphal books: Advice of the Mother of God to the Apostles, the Books of Criapos, and the ever-popular Epistle of Barnabas. The Armenian Apostolic church at times has included the Testaments of the Twelve Patriarchs in its Old Testament and the Third Epistle to the Corinthians, but does not always list it with the other 27 canonical New Testament books. The New Testament of the Coptic Bible, adopted by the Egyptian Church, includes the two Epistles of Clement. The canon of the Tewahedo Churches is somewhat looser than for other traditional Christian
Development of the Old Testament canon named as Canonical books the books of the Hebrew Bible and the deuterocanonical books named as "Ecclesiastical" books. Pope Innocent I (405 AD) in a letter sent to the bishop of Toulouse cited as Canonical books the books of the Hebrew Bible plus the deuterocanonical books as a part of the Old Testament Canon. The Decretum Gelasianum which is a work written by an anonymous scholar between 519 and 553 contains a list of books of Scripture presented as having been made Canonical by the Council of Rome (382 AD). This list mentions the Hebrew Bible plus the deuterocanonical books