Protocanonical books Protocanonical books The protocanonical books are those books of the Old Testament that are also included in the Hebrew Bible (the Tanakh) and that came to be considered canonical during the formational period of Christianity. The term "protocanonical" is often used to contrast these books to the deuterocanonical books or apocrypha, which "were sometimes doubted" by some in the early church, and are considered non-canonical by most Protestants. There are typically 39 protocanonical books in most Christian bibles, which correspond to the 24 books in the Jewish Tanakh. The list of protocanonical books is Genesis, Exodus, Leviticus, Numbers, Deuteronomy, Joshua,
Development of the Old Testament canon Church, first found as last chapter of the eighth book of the Apostolic Constitutions. Canon n. 85 of the "Ecclesiastical Canons of the Same Holy Apostles" is a list of canonical books, includes 46 books of Old Testament canon which essentially corresponds to that of the Septuagint. The Old Testament part of the Canon n. 85 stated as follows: Karl Josef von Hefele argues that "This is probably the least ancient canon in the whole collection"; even he and William Beveridge believe that the writings of the Apostolic Canons dating from end of the second or early of the third