Proverbs 25:18-22

Like a club or a sword or a sharp arrow is one who gives false testimony against a neighbor. Like a broken tooth or a lame foot is reliance on the unfaithful in a time of trouble. Like one who takes away a garment on a cold day, or like vinegar poured on a wound, is one who sings songs to a heavy heart. If your enemy is hungry, give him food to eat; if he is thirsty, give him water to drink. In doing this, you will heap burning coals on his head, and the LORD will reward you.