Deuteronomy 32:41-43

41when I sharpen my flashing sword and my hand grasps it in judgment, I will take vengeance on my adversaries and repay those who hate me.

42I will make my arrows drunk with blood, while my sword devours flesh: the blood of the slain and the captives, the heads of the enemy leaders.”

43Rejoice, you nations, with his people, Or Make his people rejoice, you nations Masoretic Text; Dead Sea Scrolls (see also Septuagint) people, / and let all the angels worship him, / for he will avenge the blood of his servants; he will take vengeance on his enemies and make atonement for his land and people.