'Priesthood' in the Bible

He has brought you near, and all your fellow Levites who are with you, but you are seeking the priesthood as well.

The Lord said to Aaron, “You, your sons, and your ancestral house will be responsible for sin against the sanctuary. You and your sons will be responsible for sin involving your priesthood.

But you and your sons will carry out your priestly responsibilities for everything concerning the altar and for what is inside the veil, and you will do that work. I am giving you the work of the priesthood as a gift, but an unauthorized person who comes near the sanctuary will be put to death.”

It will be a covenant of perpetual priesthood for him and his future descendants, because he was zealous for his God and made atonement for the Israelites.”