“Because thou hast said unto me, ‘thou art the Christ the Son of the living God;’ I also say unto thee, ‘Thou art Peter.’ For before he was called Simon. Now this name of Peter was given him by the Lord, and in a figure, that he should signify the Church. For seeing that Christ is the rock (Petra), Peter is the Christian people. For the rock (Petra) is the original name. Therefore Peter is also called from the rock; not the rock from Peter; as Christ is not called Christ from the Christian, but the Christian from Christ. Therefore he saith, ‘Thou art Peter and upon this rock’ which thou hast confessed, upon this rock which thou hast acknowledged, saying, ‘Thou art the Christ, the Son of the living God’ will I build my Church’ that is upon Myself, the Son of the living God, ‘will I build My Church.’ I will build thee upon me, not myself upon thee . . . For men who wished to be built upon men, said ‘I am of Paul; and I am of Apollos; and I of Cephas,’ who is Peter. But others did not wish to be built upon Peter, but upon the Rock, said,’But I am of Christ.’ And when the Apostle Paul ascertained that he was chosen, and Christ despised, he said, ‘Is Christ divided? Was Paul crucified for you? Or were ye baptized in the name of Paul?’ And, as not in the name of Paul, so neither in the name of Peter; but in the name of Christ.; that Peter might be built upon the Rock, not the Rock upon Peter.” (Philip Schaff, Nicene and Post-Nicene Fathers, Grand Rapids: Eerdmans, 1956, Volume VI, St. Augustine, Sermon XXVI.1-2, p. 340)