1 Thessalonians 5:15

“Be at peace among yourselves. Now we admonish you, brethren, warn them who are unruly, comfort the feeble-minded, support the weak, be patient toward all men. See that none render evil for evil to any man. Quench not the Spirit. Despise not prophesyings. Prove all things: hold fast that which is good. Abstain from every form of evil.”

This sickliness, that is to say, that disobedience of which we spoke in the fourteenth book, is the punishment of the first disobedience. It is therefore not nature, but vice; and therefore it is said to the good who are growing in grace, and living in this pilgrimage by faith, “Bear ye one another’s burdens, and so fulfill the law of Christ.” In like manner it is said elsewhere, “Warn them that are unruly, comfort the feeble-minded, support the weak, be patient toward all men. …

Chapter 4. 5. Nor would I therefore be understood to urge that ecclesiastical discipline should be set at naught, and that every one should be allowed to do exactly as he pleased, without any check, without a kind of healing chastisement, a lenity which should inspire fear, the severity of love. For then what will become of the precept of the apostle, "Warn them that are unruly, comfort the feeble-minded, support the weak, be patient toward all men; see that none render evil for evil unto any man?" At any rate, when he added these last words, "See that none render evil for evil unto any man," he showed with sufficient clearness that there is no rendering of evil for evil when one chastises those that are unruly, even though for the fault of unruliness be administered the punishment of chastising. The punishment of chastising therefore is not an evil, though the fault be an evil. …

This charity, that is, this will glowing with intensest love, the apostle eulogizes with these words: “Who shall separate us from the love of Christ? shall tribulation, or distress, or persecution, or famine, or nakedness, or peril, or the sword? (As it is written, For Thy sake we are killed all the day long; we are accounted as sheep for the slaughter.) Nay, in all these things we are more than conquerors, through Him that loved us. For I am persuaded, that neither death, nor life, nor angels, nor principalities, nor things present, nor things to come, nor height, nor depth, nor any other creature, shall be able to separate us from the love of God, which is in Christ Jesus our Lord.” And in another passage he says, “And yet I show unto you a more excellent way. Though I speak with the tongues of men and of angels, and have not love, I am become as sounding brass, or a tinkling cymbal. …

Ver. 15 . “See that none render unto any one evil for evil.” If we ought not to render evil for evil, much less evil for good; much less, when evil has not been previously done, to render evil, Such an one, you say, is a bad man, and has aggrieved me, and done me much injury. Do you wish to revenge yourself upon him? Do not retaliate. Leave him unpunished. Well, is this the stopping-place? By no means; “But alway follow after that which is good, one toward another, and toward all.” This is the higher philosophy, not only not to requite evil with evil, but to render good for evil. For this is truly revenge that brings harm to him and advantage to thyself, or rather great advantage even to him, if he will. And that thou mayest not think that this is said with respect to the faithful, therefore he has said, “both one toward another and toward all.”

1. The sheets that you send me cover me at once with compliments and confusion; for, while they praise my ability, they take away my sincerity in the faith. But as both at Alexandria and at Rome and, I may say, throughout the whole world good men have made it a habit to take the same liberties with my name, esteeming me only so far that they cannot bear to be heretics without having me of the number, I will leave aside personalities and only answer specific charges. For it is of no benefit to a cause to encounter railing with railing and to retaliate for attacks upon oneself by attacks upon one’s opponents. We are commanded not to return evil for evil but to overcome evil with good, to take our fill of insults, and to turn the other cheek to the smiter.

Wherefore , I beseech you, O virgin, do not flatter yourself on the ground of your purity alone, and do not trust in the perfection of one member; but according to the Apostle, maintain the sanctity of your body throughout. Cleanse thy head from all defilement, because it is a disgrace that it, after the sanctifying oil has been applied to it, should be polluted with the juice or powder of either crocus, or any other pigment, or should be adorned with gold or gems or any other earthly ornament, because it already shines with the radiance of heavenly adornment. It is undoubtedly a grave insult to Divine grace to prefer to it any mundane and worldly ornament. …