Luke 6:28

(in Esai. 1, 23. in App.) But we almost all of us offend against this command, and especially the powerful and rulers, not only if they have suffered insult, but if respect is not paid them, accounting all those their enemies who treat them with less consideration than they think they deserve. But it is a great dishonour in a prince to be ready to take revenge. For how shall he teach another, to return to no man evil for evil (Rom. 12:17.), if he is eager to retaliate on him who injures him.

For they who pierce their own souls deserve tears and weeping, not curses. For nothing is more hateful than a cursing heart, or more foul than a tongue which utters curses. O man, spit not forth the poison of asps, nor be turned into a beast. Thy mouth was given thee not to bite with, but to heal the wounds of others. But he commands us to count our enemies in the rank of our friends, not only in a general way, but as our particular friends for whom we are accustomed to pray; as it follows, Pray for them which persecute you. But many on the contrary falling down, and striking their faces upon the ground, and stretching forth their hands, pray God not for their sins, but against their enemies, which is nothing else but piercing their own selves. When thou prayest to Him that He would hear thee cursing thy enemies, who has forbidden thee to pray against thy enemies, how is it possible for thee to be heard, since thou art calling Him to hear thee by striking an enemy in the king's presence, not with the hand indeed, but with thy words. What art thou doing, O man? thou standest to obtain pardon of your sins, and thou fillest thy mouth with bitterness. It is a time of forgiveness, prayer, and mourning, not of rage. (Hom. 18. in Matt.) For physicians also, when they are attacked by madmen, have then most compassion on them, and exert themselves to restore them. Have thou also a like consideration towards thy persecutors; for it is they who are under the greatest infirmity. And let us not cease until they have exhausted all their bitterness, they will then overpower thee with thanks, and God Himself will give thee a crown, because thou hast delivered thy brother from the worst disease.

But the question is fairly raised, how it is that in the prophets are to be found many curses against their enemies. Upon which we must observe, that the prophets in the imprecations they uttered foretold the future, and that not with the feelings of one who wishes, but in the spirit of one who foresees.