The New Testament is a collection of Christian works written in the common (Koine) Greek language of the first century, at different times by various writers, and the modern consensus is that it provides important evidence regarding Judaism in the first century AD. In almost all Christian traditions today, the New Testament consists of 27 books. The canon or list of the Books of the New Testament is not found anywhere in any book of the Bible. It was the united Catholic Church which defined the 27 Books canon. The first time we find the complete list of the 27 books of the NT is in Athanasius, eastern Catholic bishop of the IV Century. The first time that church councils gave us this same list was in the councils of Hippo (393) and Carthage (397) in north Africqa and the pope Innocent I ratified the same canon in 405, but it is probable that a Council in Rome in 382 under pope Damasus gave the same list first. These councils provided also the Canon of the Old Testament, which included the so-called apocryphal books .