Numbers 25:11-13

11‘I am no longer angry with the Israelites. That is because of what Phinehas, the son of Eleazar and grandson of Aaron the priest, did. He did not want the people to worship any god except me. Because of him, I did not kill all the Israelites.

12So you must tell him that I have promised that my peace will be with him.

13That promise will be for him and for his descendants after him. They will always be priests. That is because he did not want the people to worship any god except me. He has removed the sin of the Israelites so that I could forgive them.’