2019 Reprint of 1948 Edition. Full facsimile of the original edition, not reproduced with Optical Recognition software. The Didache or The Teaching of the Twelve Apostles, purports to be based on sayings of the Lord and given by the Twelve Apostles to pagans who wished to become Christians. It is one of the earliest Christian writings and offers a unique glimpse into how some of the earliest Christian communities lived and worshiped.