The Epistle of Barnabas is a Greek treatise with some features of an epistle containing twenty-one chapters, preserve complete in the 4th century Codex Sinaiticus where it appears at the end of the New Testament. It is traditionally ascribed to the Barnabas who is mentioned in the Acts of the Apostles, though some ascribe it to another apostolic father of the same name, a "Barnabas of Alexandria," or simply attribute it to an unknown early Christian teacher. A form of the Epistle 850 lines long is noted in the Latin list of canonical works in the 6th century Codex Claromontanus . It is not to be confused with the Gospel of Barnabas.