Augustine rejects a proto-premillenarian view of persecution and the coming of the Antichrist.
The final persecution will end only which Jesus returns to destroy the Antichrist. Yet for those who ask 'when', Augustine says "A most unreasonable question, for, if it were good for us to know the answer, the Master, God Himself, would have told His disciples when they asked Him... Obviously, then, it is a waste of effort for us to attempt counting the precise number of years which this world has yet to go, since we know from the mouth of Truth that it is none of our business."
So much for those who would waste their time in pointless calculations--such people are few steps away from the magicians and alchemists who call Jesus and Peter magicians and attribute to them the practice of the dark arts. (This shows us the true nature of those who reject Christianity, for this is what the pagans believe as well.)