But when they proceed from those who are hired to advocate the cause of heresy, and since, according to the divine proverb, 'The words of the wicked are to lie in wait,' and 'The mouth of the wicked pours out evil things,' and 'The counsels of the wicked are deceit:' it becomes us to watch and be sober, brethren, as the Lord has said, lest any deception arise from subtlety of speech and craftiness; lest any one come and pretend to say, 'I preach Christ,' and after a little while he be found to be Antichrist. These indeed are Antichrists, whosoever come to you in the cause of the Arian madness. For what defect is there among you, that any one need to come to you from without? Or, of what do the Churches of Egypt and Libya and Alexandria stand so much in need, that these men should make a purchase of the Episcopate instead of wood and goods, and intrude into Churches which do not belong to them? Who is not aware, who does not perceive clearly, that they do all this in order to support their impiety? Wherefore although they should make themselves dumb, or although they should bind on their garments larger borders than the Pharisees, and pour themselves forth in long speeches, and practise the tones of their voice, they ought not to be believed; for it is not the mode of speaking, but the intentions of the heart and a godly conversation that recommend the faithful Christian. And thus the Sadducees and Herodians, although they have the law in their mouths, were put to rebuke by our Saviour, who said unto them, 'You do err, not knowing the Scriptures, nor the power of God:' and all men witnessed the exposure of those who pretended to quote the words of the Law, as being in their minds heretics and enemies of God. Others indeed they deceived by these professions, but when our Lord became man they were not able to deceive Him; 'for the Word was made Flesh,' who 'knows the thoughts of men that they are vain.' Thus He exposed the carping of the Jews, saying, 'If God were your Father, you would love Me, for I proceeded forth from the Father, and have come to you. ' In like manner these men seem now to act; for they disguise their real sentiments, and then make use of the language of Scripture for their writings, which they hold forth as a bait for the ignorant, that they may inveigle them into their own wickedness.
10. They ought first to condemn Arius, if they are to be heard.
Consider, whether this be not so. If, when there is no reason for their doing so, they write confessions of faith, it is a superfluous, and perhaps also a mischievous proceeding, because, when there is no enquiry, they offer occasion for controversy of words, and unsettle the simple hearts of the brethren, disseminating among them such notions as have never entered into their minds. And if they are attempting to write a defence of themselves in regard to the Arian heresy, they ought first to have removed the seeds of those evils which have sprung up, and to have proscribed those who produced them, and then in the room of former statements to set forth others which are sound; or else let them openly vindicate the opinions of Arius, that they may no longer covertly but openly show themselves enemies of Christ, and that all men may fly from them as from the face of a serpent. But now they keep back those opinions, and for a pretence write on other matters; just as if a surgeon, when summoned to attend a person wounded and suffering, should upon coming in to him say not a word concerning his wounds, but proceed to discourse about his sound limbs. Such an one would be chargeable with utter stupidity, for saying nothing on the matter for which he came, but discoursing on those other points in which he was not needed. Yet just in the same manner these men omit those matters which concern their heresy, and take upon themselves to write on other subjects; whereas if they had any regard for the Faith, or any love for Christ, they ought first to have removed out of the way those blasphemous expressions uttered against Him, and then in the room of them to speak and to write the sound words. But this they neither do themselves, nor permit those that desire to do so, whether it be from ignorance, or through craft and artifice.
11. No profit to do right in one way, if we do wrong in another.
If they do this from ignorance they must be charged with rashness, because they affirm positively concerning things that they know not; but if they dissemble knowingly, their condemnation is the greater, because while they overlook nothing in consulting for their own interests, in writing about faith in our Lord they make a mockery, and do anything rather than speak the truth; they keep back those particulars respecting which their heresy is accused, and merely bring forward the language of the Scriptures. Now this is a manifest theft of the truth, and a practice full of all iniquity; and so I am sure your piety will readily perceive it to be from the following illustrations. No person being accused of adultery defends himself as innocent of theft; nor would any one in prosecuting a charge of murder suffer the accused parties to defend themselves by saying, 'We have not committed perjury, but have preserved the deposit which was entrusted to us.' This would be mere child's play, instead of a refutation of the charge and a demonstration of the truth. For what has murder to do with a deposit, or adultery with theft? The vices are indeed related to each other as proceeding from the same heart; yet in respect to the refutation of an alleged offense, they have no connection with each other. Accordingly as it is written in the Book of Joshua the son of Nun, when Achan was charged with theft, he did not excuse himself with the plea of his zeal in the wars; but being convicted of the offense was stoned by all the people. And when Saul was charged with negligence and a breach of the law, he did not benefit his cause by alleging his conduct on other matters. For a defence on one count will not operate to obtain an acquittal on another count; but if all things should be done according to law and justice, a man must defend himself in those particulars wherein he is accused, and must either disprove the past, or else confess it with the promise that he will desist, and do so no more. But if he is guilty of the crime, and will not confess, but in order to conceal the truth speaks on other points instead of the one in question, he shows plainly that he has acted amiss, nay, and is conscious of his delinquency. But what need of many words, seeing that these persons are themselves accusers of the Arian heresy? For since they have not the boldness to speak out, but conceal their blasphemous expressions, it is plain that they know that this heresy is separate and alien from the truth. But since they themselves conceal it and are afraid to speak, it is necessary for me to strip off the veil from their impiety, and to expose the heresy to public view, knowing as I do the statements which Arius and his fellows formerly made, and how they were cast out of the Church, and degraded from the Clergy. But here first I ask for pardon of the foul words which I am about to produce, since I use them, not because I thus think, but in order to convict the heretics.
Source: Ad Episcopus Aegypti et Libyae (New Advent)