Moses’ father-in-law Jethro, along with Moses’ wife and sons, came to him in the wilderness where he was camped at the mountain of God.

He sent word to Moses, “I, your father-in-law Jethro, am coming to you with your wife and her two sons.”

Then you will take some of their daughters as brides for your sons. Their daughters will prostitute themselves with their gods and cause your sons to prostitute themselves with their gods.

“Have your brother Aaron, with his sons, come to you from the Israelites to serve Me as priest—Aaron, his sons Nadab and Abihu, Eleazar and Ithamar.

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.

Take some of the blood that is on the altar and some of the anointing oil, and sprinkle them on Aaron and his garments, as well as on his sons and their garments. In this way, he and his garments will become holy, as well as his sons and their garments.