Rom Romans, chapter Epistle to the Romans, chapter 12
Revenge not yourselves, my dearly beloved; but give place unto wrath, for it is written: Revenge is mine, I will repay, saith the Lord. But if thy enemy be hungry, give him to eat; if he thirst, give him to drink. For, doing this, thou shalt heap coals of fire upon his head. Be not overcome by evil, but overcome evil by good.