Proverbs 25:4-5; Proverbs 25:21-22
Take away the dross from the silver, and there shall come forth a vessel for the finer.
Take away the wicked [from] before the king, and his throne shall be established in righteousness.
If thy enemy shall hunger, give him bread to eat; and if he shall thirst, give him water to drink:
For thou shalt heap coals of fire upon his head, and the LORD will reward thee.