Bless those who persecute you; bless and do not curse them…Repay no one evil for evil, but take thought for what is noble in the sight of all. If possible, so far as it depends upon you, live peaceably with all. Beloved, never avenge yourselves, but leave it to the wrath of God; for it is written, "Vengeance is mine, I will repay, says the Lord." No, "if your enemy is hungry, feed him; if he is thirsty, give him drink; for by so doing you will heap burning coals upon his head." Do not be overcome by evil, but overcome evil with good.
St. Paul, Letter to the Romans, 12:14,17-21
Of course, it is a whole lot easier when we remember that we are not contending against flesh and blood, but against the principalities, against the powers, against the world rulers of this present darkness, against the spiritual hosts of wickedness in the heavenly places (Eph 6:12)
But that still doesn't make it easy.
Love it.