Reply to Faustus the Manichaean

⁴ Augustine replied: I have already said that the Lord Jesus Christ repeatedly calls Himself the Son of man, and that the Manichæans have contrived a silly story about some fabulous First Man, who figures in their impious heresy, not earthly, but combined with spurious elements, in opposition to the apostle, who says, "The first man is of the earth, earthy;" and that the apostle carefully warns us, "If any one preaches to you differently from what we have preached, let him be accursed." So that we must believe Christ to be the Son of man according to apostolic truth, not according to Manichæan error.

And since the evangelists assert that Christ was born of a woman, of the seed of David, and Paul writing to Timothy says, "Remember that Jesus Christ, of the seed of David, was raised from the dead, according to my gospel," it is clear what sense we must believe Christ to be the Son of man; for being the Son of God by whom we were made, He also by His incarnation became the Son of man, that He might die for our sins, and rise again for our justification. Accordingly He calls Himself both Son of God and Son of man.

To take only one instance out of many, in the Gospel of John it is written, "Verily, verily, I say unto you, The hour comes, and now is, when the dead shall hear the voice of the Son of God; and they that hear shall live. For as the Father has life in Himself, so He has given to the Son to have life in Himself; and has given Him power to execute judgment also, because He is the Son of man." He says, "They shall hear the voice of the Son of God;" and He says, "because He is the Son of man."

As the Son of man, He has received power to execute judgment, because He will come to judgment in human form, that He may be seen by the good and the wicked. In this form He ascended into heaven, and that voice was heard by His disciples, "He shall so come as you have seen Him go into heaven." As the Son of God, as God equal to and one with the Father, He will not be seen by the wicked; for "blessed are the pure in heart, for they shall see God." Since, then, He promises eternal life to those that believe in Him, and since to believe in Him is to believe in the true Christ, such as He declares Himself and His apostles declare Him to be, true Son of God and true Son of man; you, Manichæans, who believe in a false and spurious son of a false and spurious man, and teach that God Himself, from fear of the assault of the hostile race, gave up His own members to be tortured, and after all not to be wholly liberated, are plainly far from that eternal life which Christ promises to those who believe in Him.

It is true, He said to Peter when he confessed Him to be the Son of God, "Blessed are you, Simon Barjona." But does He promise nothing to those who believe Him to be the Son of man, when the Son of God and the Son of man are the same? Besides, eternal life is expressly promised to those who believe in the Son of man. "As Moses," He says, "lifted up the serpent in the wilderness, so must the Son of man be lifted up, that whosoever believes in Him should not perish, but have eternal life." What more do you wish?

Believe then in the Son of man, that you may have eternal life; for He is also the Son of God, who can give eternal life: for He is "the true God and eternal life," as the same John says in his epistle. John also adds, that he is antichrist who denies that Christ has come in the flesh.