Matthew 5:44
"But I say unto you, Love your enemies, bless them that curse you, do good to them that hate you, and pray for them which despitefully use you, and persecute you;"
Cross References (ranked by relevance)
Bless them which persecute you: bless, and curse not.
Not rendering evil for evil, or railing for railing: but contrariwise blessing; knowing that ye are thereunto called, that ye should inherit a blessing.
Then said Jesus, Father, forgive them; for they know not what they do. And they parted his raiment, and cast lots.
Who, when he was reviled, reviled not again; when he suffered, he threatened not; but committed himself to him that judgeth righteously:
And he kneeled down, and cried with a loud voice, Lord, lay not this sin to their charge. And when he had said this, he fell asleep.
And he answered, Thou shalt not smite them: wouldest thou smite those whom thou hast taken captive with thy sword and with thy bow? set bread and water before them, that they may eat and drink, and go to their master.
If I have rewarded evil unto him that was at peace with me; (yea, I have delivered him that without cause is mine enemy:)