(21) Be not overcome of evil, but . . .--A fine sentiment. The infliction of vengeance is not a sign of strength, but of weakness. To repress the desire for revenge is to gain a victory over self, which is not only nobler in itself, but will also be much more effectual. It will disarm the enemy, and turn him into a friend.

12:17-21 Since men became enemies to God, they have been very ready to be enemies one to another. And those that embrace religion, must expect to meet with enemies in a world whose smiles seldom agree with Christ's. Recompense to no man evil for evil. That is a brutish recompence, befitting only animals, which are not conscious of any being above them, or of any existence hereafter. And not only do, but study and take care to do, that which is amiable and creditable, and recommends religion to all with whom you converse. Study the things that make for peace; if it be possible, without offending God and wounding conscience. Avenge not yourselves. This is a hard lesson to corrupt nature, therefore a remedy against it is added. Give place unto wrath. When a man's passion is up, and the stream is strong, let it pass off; lest it be made to rage the more against us. The line of our duty is clearly marked out, and if our enemies are not melted by persevering kindness, we are not to seek vengeance; they will be consumed by the fiery wrath of that God to whom vengeance belongeth. The last verse suggests what is not easily understood by the world; that in all strife and contention, those that revenge are conquered, and those that forgive are conquerors. Be not overcome of evil. Learn to defeat ill designs against you, either to change them, or to preserve your own peace. He that has this rule over his spirit, is better than the mighty. God's children may be asked whether it is not more sweet unto them than all earthly good, that God so enables them by his Spirit, thus to feel and act.Be not overcome of evil,.... Neither of the evil one, Satan, who is very busy to stir up the corruption of nature to an hatred of enemies, and to seek revenge; but give no place nor heed unto him, resist him, and he will flee from you, James 4:7; "put on the whole armour of God", Ephesians 6:11, whereby you may defend yourselves, that he cannot touch you: nor of the evil of sin that dwells in you; "for whom a man is overcome, of the same is he brought in bondage", 2 Peter 2:19; nor of the evil of the man that has done you an injury, as you will be, if you return evil for evil, or take any steps and measures to avenge yourselves; for then not you, but he that has done you the wrong, will be the conqueror:

but overcome evil with good; overcome the evil man, and the evil he has done you, by doing good to him, by feeding him when hungry, by giving him drink when thirsty, by clothing him when naked, and by doing other offices of kindness and humanity to him; which is most likely to win upon him, and of an enemy to make him your friend: and if not, however it will show that you are conquerors, yea, "more than conquerors", Romans 8:37, through the grace and strength of him that has loved you, over Satan, over the corruptions of your own hearts, and over the malice and wickedness of your enemies.