Numbers 25:10-13

Then the LORD said to Moses, “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. Now tell him that I am making my special covenant of peace with him. 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.”