Note 523 — Chapter X · THE SYSTEM OF THE PISTIS SOPHIA AND ITS RELATED TEXTS[459]
Reading edition
p. 145, Copt. So Irenaeus in his account of the Valentinian doctrines, Bk I. c. 1, p. 12 sqq. I suppose there is an allusion to this in the remark of Jesus to Mary that a year is as a day (p. 243, Copt.). But all the astrology of the time seems to have divided the astronomical day not into 24, but into 12 hours. It was the same with the Manichaeans. See Chavannes and Pelliot, “Un Traité manichéen retrouvé en Chine,” Journal Asiatique, série X, t. XVIII. (Nov.-Dec. 1911), p. 540, n. 4.