Romans 12:17

14 Bless those persecuting you; bless, and curse not;

15 to rejoice with the rejoicing, and to weep with the weeping,

16 of the same mind one toward another, not minding the high things, but with the lowly going along; become not wise in your own conceit;

17 giving back to no one evil for evil; providing right things before all men.

18 If possible -- so far as in you -- with all men being in peace;

19 not avenging yourselves, beloved, but give place to the wrath, for it hath been written, `Vengeance [is] Mine,

20 I will recompense again, saith the Lord;` if, then, thine enemy doth hunger, feed him; if he doth thirst, give him drink; for this doing, coals of fire thou shalt heap upon his head;