Hippolytus

“ And very often, taking the Cup, as if offering up the Eucharistic prayer, and prolonging to a greater length than usual the word of invocation, he would cause the appearance of a purple, and sometimes of a red mixture, so that his dupes imagined that a certain Grace descended and communicated to the potion a blood-red potency. ”

“ A certain other teacher among them, Marcus, [1] an adept in sorcery, carrying on operations [2] partly by sleight of hand and partly by demons, deceived many from time to time. This (heretic) alleged that there resided in him the mightiest power from invisible and unnameable places. ”