Ancient Church Orders in the context of "Apostolic Canons"

The Apostolic Tradition (or Egyptian Church Order) is an early Christian treatise which belongs to the genre of the ancient Church Orders. It has been described to be of "incomparable importance as a source of information about church life and liturgy in the third century".

Rediscovered in the 19th century, it was given the name of "Egyptian Church Order". In the first half of the 20th century, this text was commonly identified with the lost Apostolic Tradition presumed to have been written by Hippolytus of Rome. Due to this attribution, and the apparent early date of the text, Apostolic Tradition played a crucial role in the liturgical reforms of many mainstream Christian bodies. The attribution of the text to Hippolytus has since become a subject of continued debate in recent scholarship.

Didascalia Apostolorum, or just Didascalia, is an early Christian legal treatise which belongs to the genre of the Church Orders. It presents itself as being written by the Twelve Apostles at the time of the Council of Jerusalem; however, scholars agree that it was actually a later composition, with most estimates suggesting the 3rd century, and other estimates suggesting potentially as late as the 4th century.

The Didascalia was clearly modeled on the earlier Didache. The author is unknown, but he was probably a bishop. The provenance is usually regarded as Northern Syria, possibly near Antioch.