Apocalypse 12:9

4. But since this man is the only one who has dared openly to mutilate the Scriptures, and unblushingly above all others to inveigh against God, I purpose specially to refute him, convicting him out of his own writings; and, with the help of God, I shall overthrow him out of those discourses of the Lord and the apostles, which are of authority with him, and of which he makes use. At present, however, I have simply been led to mention him, that thou mightest know that all those who in any way corrupt the truth, and injuriously affect the preaching of the Church, are the disciples and successors of Simon Magus of Samaria. Although they do not confess the name of their master, in order all the more to seduce others, yet they do teach his doctrines. …

7-9. “There was a battle in heaven: Michael and his angels fought with the dragon; and the dragon warred, and his angels, and they prevailed not; nor was their place found any more in heaven. And that great dragon was cast forth, that old serpent: he was cast forth into the earth.”] This is the beginning of Antichrist; yet previously Elias must prophesy, and there must be times of peace. And afterwards, when the three years and six months are completed in the preaching of Elias , he also must be cast down from heaven, where up till that time he had had the power of ascending; and all the apostate angels, as well as Antichrist, must be roused up from hell. Paul the apostle says: “Except there come a falling away first, and the man of sin shall appear, the son of perdition; and the adversary who exalted himself above all which is called God, or which is worshipped.”

2. Now ye know that those three places mentioned yesterday where the seed did not grow, “the way side,” “the stony ground,” and “the thorny places,” are the same as these “tares.” They received only a different name under a different similitude. For when similitudes are used, or the literal meaning of a term is not expressed, not the truth but a similitude of the truth is conveyed by them. I see that but few have understood my meaning; yet it is for the benefit of all that I speak. In things visible, a way side is a way side, stony ground is stony ground, thorny places are thorny places; they are simply what they are, because the names are used in their literal sense. …

Jerome to the most blessed pope Theophilus. The letter of your holiness has given me a twofold pleasure, partly because it has had for its bearers those reverend and estimable men, the bishop Agatho and the deacon Athanasius, and partly because it has shewn your zeal for the faith against a most wicked heresy. The voice of your holiness has rung throughout the world, and to the joy of all Christ’s churches the poisonous suggestions of the devil have been silenced. The old serpent hisses no longer, but, writhing and disembowelled, lurks in dark caverns unable to bear the shining of the sun. I have already, before the writing of your letter, sent missives to the West pointing out to those of my own language some of the quibbles employed by the heretics. …