Deuteronomy 32:40

36 For the LORD will vindicate His people and have compassion on His servants when He sees that their strength is gone and no one remains, slave or free.

37 He will say: “Where are their gods, the rock in which they took refuge,

38 which ate the fat of their sacrifices and drank the wine of their drink offerings? Let them rise up and help you; let them give you shelter!

39 See now that I am He; there is no God besides Me. I bring death and I give life; I wound and I heal, and there is no one who can deliver from My hand.

40 For I lift up My hand to heaven and declare: As surely as I live forever,

41 when 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.

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

43 Rejoice, O heavens, with Him, and let all God’s angels worship Him. Rejoice, O nations, with His people; for He will avenge the blood of His children. He will take vengeance on His adversaries and repay those who hate Him; He will cleanse His land and His people.

44 Then Moses came with Joshua son of Nun and recited all the words of this song in the hearing of the people.

Read all of Deuteronomy 32