1911 Encyclopædia Britannica, Volume 8… (1911)
“ St Matthew’s is used several times, and there are phrases which occur only in St Luke’s, while St John’s Gospel lies behind the eucharistic prayers which the writer has embodied in his work. There are no indications of any form of doctrinal heresy as needing rebuke; the warnings against false teaching are quite general. While the first part must be dated before the Epistle of Barnabas, i.e. before A.D. 90, it seems wisest not to place the complete work much earlier than A.D. 120, and there are passages which may well be later. A large literature has sprung up round The Didachē since 1884. ”
