Romans 12:18-21

If it be possible, as much as in you lieth, be at peace with all men. Avenge not yourselves, beloved, but give place unto the wrath of God: for it is written, Vengeance belongeth unto me; I will recompense, saith the Lord. But if thine enemy hunger, feed him; if he thirst, give him to drink: for in so doing thou shalt heap coals of fire upon his head. Be not overcome of evil, but overcome evil with good.