Love your enemies

Proverbs 25: 21-22

If your enemy is hungry, give him food to eat;
         And if he is thirsty, give him water to drink; 

For you will heap burning coals on his head,
         And the LORD will reward you. 

St. Paul quotes this passage in a section about not seeking vengeance in Romans 12:19-20.

Verse 19 reads, Do not take revenge, my dear friends, but leave room for God's wrath, for it is written: "It is mine to avenge; I will repay," says the Lord.

Recently when Damien and I were at a holiday arts and crafts show, I saw a t-shirt that read, "Vengeance is mine, says the Lord, but Bob still wanted a piece of the action."