The Lord told Aaron, “You and your sons and the other Levites bear the responsibility for sins relating to the sanctuary. You and your sons alone bear the responsibility for sins relating to your priesthood.
But only you and your sons are responsible for your priesthood, doing all that concerns the altar and is behind the veil. Only you are to perform that service. I am giving you the gift of your priesthood, but anyone else who approaches the sanctuary must be executed.”