Development of the New Testament canon Development of the New Testament canon The canon of the New Testament is the set of books Christians regard as divinely inspired and constituting the New Testament of the Christian Bible. For most, it is an agreed-upon list of twenty-seven books that includes the Canonical Gospels, Acts, letters of the Apostles, and Revelation. The books of the canon of the New Testament were written before 120 AD. For the Orthodox, the recognition of these writings as authoritative was formalized in the Second Council of Trullan of 692. The Catholic Church made dogmatic definition upon its Biblical canon in 382 at
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