Matthew 5:44
But I say to you, Love your enemies: bless those who curse you, do good to those who hate you, and pray for those who insult you and persecute you:
Matthew 6:14
For if you forgive men their offenses, your heavenly Father will also forgive you.
Romans 12:20-21
If, therefore, your enemy is hungry, feed him; if he is thirsty, give him drink; for by doing this, you will heap coals of fire on his head.
1 Thessalonians 5:15
See that no one render evil for evil to any, but always pursue that which is good toward one another and toward all.
1 Peter 3:9
not repaying evil for evil, nor reviling for reviling, but, on the other hand, blessing, since you know that for this end you were called, that you might inherit blessing.