Didache

Anonymous; 'The Teaching of the Twelve Apostles' is pseudonymous in title only, drawing on earlier oral and written tradition -- actual compiler(s) unknown, likely finalized in the late 1st to early 2nd century AD, though some of its material may be as early as AD 50-70. An early church manual covering ethical instruction (the 'Two Ways' of life and death), baptism, fasting, the Eucharist, and church leadership.