2 Timothy 3:9

36. None of your party, O Manes, will you make a Galatian; neither will you in this fashion divert us from the faith of Christ. Yea, even although you were to work signs and wonders, although you were to raise the dead, although you were to present to us the very image of Paul himself, you would remain accursed still. For we have been instructed beforehand with regard to you: we have been both warned and armed against you by the Holy Scriptures. You are a vessel of Antichrist; and no vessel of honour, in sooth, but a mean and base one, used by him as any barbarian or tyrant may do, who, in attempting to make an inroad on a people living under the righteousness of the laws, sends some select vessel on beforehand, as it were destined to death, with the view of finding out the exact magnitude and character of the strength possessed by the legitimate king and his nation: for the man is too m …

45. On receipt of this letter, Diodorus made himself master of its contents, and then entered the lists against Manes. This he did too with such spirit, that he was commended greatly by all for the careful and satisfactory demonstration which he gave of the fact that there is a mutual relationship between the two testaments, and also between the two laws. Discovering also more arguments for himself he was able to bring forward many points of great pertinency and power against the man, and in defence of the truth. He also reasoned in a conclusive manner against his opponent on verbal grounds. For example, he argued with him in the following manner: Did you say that the testaments are two? Well, then, say either that there are two old testaments, or that there are two new testaments. …

26. But of them he saith what? “They shall not halve their days.” What is, “They shall not halve their days”? They shall not make progress as much as they think: within the time which they expect, they shall perish. For he is that partridge, whereof hath been said, “In the half of his days they shall leave him, and in his last days he shall be an unwise one.” They make progress, but for a time. For what saith the Apostle? “But evil men and seducers shall make progress for the worse, themselves erring, and other men into error driving.” But “a blind man leading a blind man, together into a ditch they fall.” Deservedly they fall “into the pit of corruption.” What therefore saith he? They shall make progress for the worse: not however for long. …

Ver. 9 . “But they shall proceed no further; for their folly shall be manifested unto all men, as theirs also was.”

134. This is what we understand according to the whole course of the holy Scriptures; but the Arians, who will not think of God the things that be right, may be put to silence by an example just suited to their deserts; that they may not believe everything in carnal fashion, since they themselves do not see the works of their father the devil with bodily eyes. So the Lord has declared of their fellows the Jews, saying: “Ye do what ye have seen your father doing;” though they are reproved not because they saw the work of the devil, but because they did his will, since the devil unseen works out sin in them in accordance with their own wickedness. We have written this, as the Apostle did, because of the folly of these traitors.

[20.] But to return to the matter in hand: It behoves us then to have a great dread of the crime of perverting the faith and adulterating religion, a crime from which we are deterred not only by the Church’s discipline, but also by the censure of apostolical authority. For every one knows how gravely, how severely, how vehemently, the blessed apostle Paul inveighs against certain, who, with marvellous levity, had “been so soon removed from him who had called them to the grace of Christ to another Gospel, which was not another;” “who had heaped to themselves teachers after their own lusts, turning away their ears from the truth, and being turned aside unto fables;” “having damnation because they had cast off their first faith;” who had been deceived by those of whom the same apostle writes to the Roman Christians, “Now, I beseech you, brethren, mark them which cause divisions and offences …