Reply to Faustus the Manichaean

³ Augustine replied: What amazing folly, to disbelieve what Matthew records of Christ, while you believe Manichæus! If Matthew is not to be believed because he was not present when Christ said, "I came not to destroy the law and the prophets, but to fulfill," was Manichæus present, was he even born, when Christ appeared among men? According, then, to your rule, you should not believe anything that Manichæus says of Christ. On the other hand, we refuse to believe what Manichæus says of Christ; not because he was not present as a witness of Christ's words and actions, but because he contradicts Christ's disciples, and the Gospel which rests on their authority.

The apostle, speaking in the Holy Spirit, tells us that such teachers would arise. With reference to such, he says to believers: "If any man preaches to you another gospel than that you have received, let him be accursed." If no one can say what is true of Christ unless he has himself seen and heard Him, no one now can be trusted. But if believers can now say what is true of Christ because the truth has been handed down in word or writing by those who saw and heard, why might not Matthew have heard the truth from his fellow disciple John, if John was present and he himself was not, as from the writings of John both we who are born so long after and those who shall be born after us can learn the truth about Christ?

In this way, the Gospels of Luke and Mark, who were companions of the disciples, as well as the Gospel of Matthew, have the same authority as that of John. Besides, the Lord Himself might have told Matthew what those called before him had already been witnesses of. Your idea is, that John should have recorded this saying of the Lord, as he was present on the occasion. As if it might not happen that, since it was impossible to write all that be heard from the Lord, he set himself to write some, omitting this among others.

Does he not say at the close of his Gospel: "And there are also many other things which Jesus did, the which, if they should be written every one, I suppose that even the world itself could not contain the books that should be written"? This proves that he omitted many things intentionally. But if you choose John as an authority regarding the law and the prophets, I ask you only to believe his testimony to them. It is John who writes that Isaiah saw the glory of Christ. It is in his Gospel we find the text already treated of: "If you believed Moses, you would also believe me; for he wrote of me." Your evasions are met on every side.

You ought to say plainly that you do not believe the gospel of Christ. For to believe what you please, and not to believe what you please, is to believe yourselves, and not the gospel.