Irenæus (I. xxiii. 1):  “He taught that it was himself who appeared among the Jews as the Son, and descended in Samaria as the Father, but came to other nations as the Holy Spirit.” Cyril here departs from his authority by substituting Mount Sinai for Samaria, and thereby falls into error.  Simon had first appeared in Samaria, being a native of Gitton:  moreover in claiming to be the Father he meant to set himself far above the inferior Deity who had given the Law on Sinai, saying that he was “the highest of all Powers, that is the Father who is over all.”