Deuteronomy 32:42-44 World English Bible (WEB)
42 I will make my arrows drunk with blood.
My sword shall devour flesh with the blood of the slain and the captives,
from the head of the leaders of the enemy.”
43 Rejoice, you nations, with his people,
for he will avenge the blood of his servants.
He will take vengeance on his adversaries,
and will make atonement for his land and for his people.
44 Moses came and spoke all the words of this song in the ears of the people, he and Joshua the son of Nun.