But Nadab and Abihu died in the Lord’s presence when they presented unauthorised fire before the Lord in the Wilderness of Sinai, and they had no sons. So Eleazar and Ithamar served as priests under the direction of Aaron their father.
But you and your sons will carry out your priestly responsibilities for everything concerning the altar and for what is inside the curtain, and you will do that work. I am giving you the work of the priesthood as a gift, but an unauthorised person who comes near the sanctuary will be put to death.’
Moses spoke to Aaron and his remaining sons, Eleazar and Ithamar: ‘Take the grain offering that is left over from the food offerings to the Lord, and eat it prepared without yeast beside the altar, because it is especially holy.
Tie the sashes on Aaron and his sons and fasten headbands on them. The priesthood is to be theirs by a permanent statute. This is the way you will ordain Aaron and his sons.