This is a Very Potent Quote from St. Cyril of Jerusalem in 386 A.D. from Catechetical Lecture XV

18 ...... " I fear the schisms of the Churches "

Fast forward almost 2,000 years and today we have numerous off shoot denominations and schisms.

This is the whole portion :

18. Guard thyself then, O man; thou hast the signs of Antichrist; and remember them not only thyself, but impart them also freely to all. If thou hast a child according to the flesh, admonish him of this now; if thou hast begotten one through catechizing, put him also on his guard, lest he receive the false one as the True. For the mystery of iniquity doth already work. I fear these wars of the nations; I fear the schisms of the Churches; I fear the mutual hatred of the brethren. But enough on this subject; only God forbid that it should be fulfilled in our days; nevertheless, let us be on our guard. And thus much concerning Antichrist.