The Lord said to Aaron: You and your sons and your ancestral house with you shall bear responsibility for offenses connected with the sanctuary, while you and your sons alone shall bear responsibility for offenses connected with the priesthood.
But you and your sons with you shall diligently perform your priestly duties in all that concerns the altar and the area behind the curtain. I give your priesthood as a gift; any outsider who approaches shall be put to death.
But you shall make a register of Aaron and his descendants; it is they who shall attend to the priesthood, and any outsider who comes near shall be put to death.