Romans 12:19-21

Do not take revenge, my friends, but leave room for God's wrath, for it is written: "It is mine to avenge; I will repay,"says the Lord. On the contrary: "If your enemy is hungry, feed him; if he is thirsty, give him something to drink. In doing this, you will heap burning coals on his head." Do not be overcome by evil, but overcome evil with good.