Deuteronomy 32:41-43

41 that I will sharpen my flashing sword and see that justice is done. I will take revenge on my enemies and punish those who hate me.

42 My arrows will drip with their blood, and my sword will kill all who oppose me. I will spare no one who fights against me; even the wounded and prisoners will die.'

43 "Nations, you must praise the LORD's people--- he punishes all who kill them. He takes revenge on his enemies and forgives the sins of his people."