Of Theophilus, whom we have shown to be bishop of the church of the Antiochians, there are extant three elementary works To Autolycus, and another bearing the title Against the Heresy of Hermogenes, in which he uses testimonies from the Apocalypse of John; and certain other catechetical books of his. And since at that time too the heretics, like tares, were no less corrupting the pure seed of the apostolic teaching, the shepherds of the churches everywhere drove them off and held them back, as it were certain wild beasts, from the sheep of Christ—now by admonitions and exhortations to the brethren, now by stripping for the contest against them more openly, by unwritten inquiries and refutations face to face, and now also through written memoirs setting straight their opinions with most exact proofs. Theophilus, at any rate, is plainly one who campaigned against them along with the others, from a certain work composed by him not ignobly against Marcion, which together with the others we have mentioned is preserved even to this day. And him Maximinus succeeds as the seventh from the apostles in the church of the Antiochians.