Aaron and his sons shall wear them whenever they go into the tent of meeting or approach the altar to minister in the sanctuary, lest they incur guilt and die. This shall be a perpetual ordinance for him and for his descendants.
But you and your sons with you must take care to exercise your priesthood in whatever concerns the altar and the area within the veil. I give you your priesthood as a gift. Any unauthorized person who comes near shall be put to death. The Priests’ Share of the Sacrifices.
East of the tabernacle, that is, in front of the tent of meeting, toward the sunrise, were camped Moses and Aaron and the latter’s sons, performing the duties of the sanctuary incumbent upon the Israelites. Any unauthorized person who came near was to be put to death.