The Church was founded upon Peter: although elsewhere the same is attributed to all the Apostles, and they all receive the keys of the kingdom of heaven, the strength of the Church depends upon them all alike, yet one among the twelve is chosen so that when a head has been appointed, there may be no occasion for schism.
St. JeromeWhosoever you are who introduce new doctrines, I beseech you to spare the ears of Romans! Spare that faith which was commended by the voice of an Apostle. Why should you attempt to teach us, at the end of hundreds of years, that which we never heard before? Why bring forward what Peter and Paul did not will to make known? Until this day, the world was Christian without your doctrine. Thus, I hold as an old man onto that faith wherein I was regenerated as a boy.
St. Jerome