And it was to Aaron and to his sons for a law forever from the sons of Israel: for it is an offering; and it shall be an offering from the sons of Israel from the sacrifices of peace their offerings to Jehovah.

and girth them with girdles: as well Aaron as his sons. And put the bonnets on them that the priest's office may be theirs for a perpetual law. And fill the hands of Aaron and of his sons,

In the tent of appointment from without the vail, which is over the testimony, Aaron shall arrange it, and his sons, from evening to morning, before Jehovah: a law forever for their generations for the sons of Israel.

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.”

And they shall be upon Aaron and his sons, when they go into the tabernacle of witness, or when they go unto the altar to minister in holiness, that they bear no sin and so die. And it shall be a law for ever unto Aaron and his seed after him."

And you shall observe this thing for a law to you and to your sons forever.

You shall take of the blood that is on the altar, and of the anointing oil, and sprinkle it on Aaron, and on his garments, and on his sons, and on the garments of his sons with him: and he shall be made holy, and his garments, and his sons, and his sons' garments with him.

keeping loyal love to the thousands, forgiving iniquity and transgression and sin, and he does not leave utterly unpunished, punishing [the] guilt of fathers on sons and on sons of sons on third and fourth [generations]."

And thou, bring thou near unto thee Aaron thy brother, and his sons with him, from the midst of the sons of Israel, for his being priest to Me, even Aaron, Nadab, and Abihu, Eleazar and Ithamar, sons of Aaron;

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.