'Priesthood' in the Bible

But you will count Aaron and his descendants; they will keep their priesthood, and the stranger who approaches will be put to death."

{He has allowed you to approach him}, you with all your brothers, the descendants of Levi, but yet you also seek the priesthood.

Yahweh said to Aaron, "You, your sons, and your family with you will bear the guilt of the sanctuary, and you and your sons with you will bear the guilt of your priesthood.

But you with your sons will keep your priesthood to perform your priestly duties for everything at the altar and for {the area behind the curtain}. I give you the priesthood as a gift, but the stranger who approaches will be put to death."

and it will be for him and his {offspring} after him a covenant of an eternal priesthood because he was jealous for his God and made atonement for the {Israelites}.'"