Q: Whether Vengeance Is Lawful?

A: On the contrary,
We should look to God for nothing save what is good and lawful. But we are to look to God for vengeance on His enemies: for it is written (Luke 18:7): "Will not God revenge His elect who cry to Him day and night?" as if to say: "He will indeed." Therefore vengeance is not essentially evil and unlawful.

I answer that,
Vengeance consists in the infliction of a penal evil on one who has sinned. Accordingly, in the matter of vengeance, we must consider the mind of the avenger. For if his intention is directed chiefly to the evil of the person on whom he takes vengeance and rests there, then his vengeance is altogether unlawful: because to take pleasure in another's evil belongs to hatred, which is contrary to the charity whereby we are bound to love all men. Nor is it an excuse that he intends the evil of one who has unjustly inflicted evil on him, as neither is a man excused for hating one that hates him: for a man may not sin against another just because the latter has already sinned against him, since this is to be overcome by evil, which was forbidden by the Apostle, who says (Rom. 12:21): "Be not overcome by evil, but overcome evil by good."

If, however, the avenger's intention be directed chiefly to some good, to be obtained by means of the punishment of the person who has sinned (for instance that the sinner may amend, or at least that he may be restrained and others be not disturbed, that justice may be upheld, and God honored), then vengeance may be lawful, provided other due circumstances be observed.

Reply Obj. 1: He who takes vengeance on the wicked in keeping with his rank and position does not usurp what belongs to God but makes use of the power granted him by God. For it is written (Rom. 13:4) of the earthly prince that "he is God's minister, an avenger to execute wrath upon him that doeth evil." If, however, a man takes vengeance outside the order of divine appointment, he usurps what is God's and therefore sins.

Reply Obj. 2: The good bear with the wicked by enduring patiently, and in due manner, the wrongs they themselves receive from them: but they do not bear with them as to endure the wrongs they inflict on God and their neighbor. For Chrysostom [*Cf. Opus Imperfectum, Hom. v in Matth., falsely ascribed to St. Chrysostom] says: "It is praiseworthy to be patient under our own wrongs, but to overlook God's wrongs is most wicked."

Reply Obj. 3: The law of the Gospel is the law of love, and therefore those who do good out of love, and who alone properly belong to the Gospel, ought not to be terrorized by means of punishment, but only those who are not moved by love to do good, and who, though they belong to the Church outwardly, do not belong to it in merit.

Reply Obj. 4: Sometimes a wrong done to a person reflects on God and the Church: and then it is the duty of that person to avenge the wrong. For example, Elias made fire descend on those who were come to seize him (4 Kings 1); likewise Eliseus cursed the boys that mocked him (4 Kings 2); and Pope Sylverius excommunicated those who sent him into exile (XXIII, Q. iv, Cap. Guilisarius). But in so far as the wrong inflicted on a man affects his person, he should bear it patiently if this be expedient. For these precepts of patience are to be understood as referring to preparedness of the mind, as Augustine states (De Serm. Dom. in Monte i).

Reply Obj. 5: When the whole multitude sins, vengeance must be taken on them, either in respect of the whole multitude--thus the Egyptians were drowned in the Red Sea while they were pursuing the children of Israel (Ex. 14), and the people of Sodom were entirely destroyed (Gen. 19)--or as regards part of the multitude, as may be seen in the punishment of those who worshipped the calf.

Sometimes, however, if there is hope of many making amends, the severity of vengeance should be brought to bear on a few of the principals, whose punishment fills the rest with fear; thus the Lord (Num. 25) commanded the princes of the people to be hanged for the sin of the multitude.

On the other hand, if it is not the whole but only a part of the multitude that has sinned, then if the guilty can be separated from the innocent, vengeance should be wrought on them: provided, however, that this can be done without scandal to others; else the multitude should be spared and severity foregone. The same applies to the sovereign, whom the multitude follow. For his sin should be borne with, if it cannot be punished without scandal to the multitude: unless indeed his sin were such, that it would do more harm to the multitude, either spiritually or temporally, than would the scandal that was feared to arise from his punishment.