Romans 12:20

20 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.

Romans 12:20 In-Context

18 If it be possible, as much as in you lieth, be at peace with all men.
19 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.
20 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.
21 Be not overcome of evil, but overcome evil with good.
The American Standard Version is in the public domain.