Numbers 25:10-13

10Then Adonai spoke to Moses saying,

11“Phinehas son of Eleazar son of Aaron the kohen has turned away My anger from Bnei-Yisrael because he was very zealous for Me among them, so that I did not put an end to Bnei-Yisrael in My zeal.

12So now say: See, I am making with him a covenant of shalom!

13It will be for him and his descendants after him a covenant of an everlasting priesthood—because he was zealous for his God and atoned for Bnei-Yisrael.”