Moses' father-in-law Jethro, together with Moses' two sons and his wife, came to Moses in the desert where he was camped at the mountain of God.

He told Moses, "I, your father-in-law Jethro, am coming to you along with your wife and her two sons."

"You are to bring your brother Aaron, along with his sons, from among the Israelis so they can serve as priests for me: that is, Aaron and his sons Nadab, Abihu, Eleazar, and Ithamar.

You are to gird Aaron and his sons with sashes and tie headdresses on them. The priesthood is to belong to them by perpetual ordinance, and you are to ordain Aaron and his sons.

You are to take some of the blood which is on the altar, along with some of the anointing oil, and sprinkle it on Aaron and his garments, and on his sons and their garments. He is to be consecrated with his garments, along with his sons and their garments.

"You are not to take any of their daughters for your sons. Otherwise, when their daughters prostitute themselves with their gods, they may cause your sons to prostitute themselves with their gods.