43 Rejoice, you nations, with his people,[1][2]for he will avenge the blood of his servants; he will take vengeance on his enemies and make atonement for his land and people.

Matthew Henry's Commentary on Deuteronomy 32:43

Commentary on Deuteronomy 32:39-43

(Read Deuteronomy 32:39-43)

This conclusion of the song speaks, 1. Glory to God. No escape can be made from his power. 2. It speaks terror to his enemies. Terror indeed to those who hate him. The wrath of God is here revealed from heaven against them. 3. It speaks comfort to his own people. The song concludes with words of joy. Whatever judgments are brought upon sinners, it shall go well with the people of God.