Greek · Ad Autolycum
Three books addressed to a pagan friend defending belief in God and the antiquity of the Hebrew scriptures. It contains the earliest Christian use of 'Trinity' (trias) for God.
Dating
Book 3 continues a chronology to the death of Marcus Aurelius (March 180), so the work was finished soon after 180; books 1-2 may be slightly earlier.Read the full text(opens in a new tab)ANF vol. 2 (1885), tr. Marcus Dods, from CCEL, public domain