Matthew 5:44
But I command you all, love your enemies, and pray for your persecutors;
Matthew 6:14
"For if you forgive others their offences, your Heavenly Father will forgive you also;
Romans 12:20-21
On the contrary, therefore, if your enemy is hungry, give him food; if he is thirsty, quench his thirst. For by doing this you will be heaping burning coals upon his head.
1 Thessalonians 5:15
See to it that no one ever repays another with evil for evil; but always seek opportunities of doing good both to one another and to all the world.
1 Peter 3:9
not requiting evil with evil nor abuse with abuse, but, on the contrary, giving a blessing in return, because a blessing is what you have been called by God to inherit.