Proverbs 16:7

When a person’s ways are pleasing to the Lord, he even reconciles his enemies to himself.

Proverbs 24:17-18

Do not rejoice when your enemy falls, and when he stumbles do not let your heart rejoice, lest the Lord see it, and be displeased, and turn his wrath away from him.

 Proverbs 25:21-22.

If your enemy is hungry, give him food to eat, and if he is thirsty, give him water to drink, for you will heap coals of fire on his head, and the Lord will reward you.