Numbers 25:13

13 He and his descendants will have a covenant of a lasting priesthood, because he was zealous for the honor of his God and made atonement for the Israelites.”

Read Numbers 25:13 Using Other Translations

And he shall have it, and his seed after him, even the covenant of an everlasting priesthood; because he was zealous for his God, and made an atonement for the children of Israel.
and it shall be to him and to his descendants after him the covenant of a perpetual priesthood, because he was jealous for his God and made atonement for the people of Israel.'"
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. ”