But Aaron and his sons made offerings on the altar of burnt offering and on the altar of incense, doing all the work of the most holy place, to make atonement for Israel, according to all that Moses the servant of God had commanded.
Then bring near to you your brother Aaron, and his sons with him, from among the Israelites, to serve me as priests—Aaron and Aaron's sons, Nadab and Abihu, Eleazar and Ithamar.
You shall put them on your brother Aaron, and on his sons with him, and shall anoint them and ordain them and consecrate them, so that they may serve me as priests.
and you shall gird them with sashes and tie headdresses on them; and the priesthood shall be theirs by a perpetual ordinance. You shall then ordain Aaron and his sons.
In this way all the work of the tabernacle of the tent of meeting was finished; the Israelites had done everything just as the Lord had commanded Moses.
which the Lord commanded Moses on Mount Sinai, when he commanded the people of Israel to bring their offerings to the Lord, in the wilderness of Sinai.