The Donatists, holding the validity of Baptism to depend on the holiness of the minister, made it, in fact, man’s act, man’s gift. St. Augustin answers, Baptism is Christ’s, not man’s, and that “as His, it availeth equally to whom, however unequal they through whom, it is given.” Ep. 93, ad Vinc. Don § 47. See other passages, Tract. 67, on Holy Baptism, p. 192 sqq.