Numbers 25:11, 13

“Phinehas son of Eleazar and grandson of Aaron the priest has turned my anger away from the Israelites by being as zealous among them as I was. So I stopped destroying all Israel as I had intended to do in my zealous anger.

In this covenant, I give him and his descendants a permanent right to the priesthood, for in his zeal for me, his God, he purified the people of Israel, making them right with me.”