The Synaxis of the Holy and the Most Praiseworthy Twelve Apostles”, 14th century (photo: Public Domain) Didache {teach}  (ˈdɪdəˌkiː)  n (Theology) a treatise, perhaps of the 1st or early 2nd century ad, on Christian morality and practices. Also called: the Teaching of the Twelve Apostles [C19: from Greek, literally: a teaching, from didaskein to teach] Collins English Dictionary … Continue reading Didache