And Aaron and his sons will use them when they enter the tabernacle of the testimony, and when they approach toward the altar, in order to minister in the sanctuary, lest, being guilty of iniquity, they may die. It shall be a law forever for Aaron, and for his offspring after him."
If any man has had sexual intercourse with the wife of his paternal or maternal uncle, and he has uncovered the shame of his close relative, both shall bear their sin. They shall die without children.
Let them observe my precepts, so that they may not fall under sin, and die in the Sanctuary, when they will have defiled it. I am the Lord, who sanctifies them.
But as for you and your sons: guard the priesthood. For all that pertains to the service of the altar and of what is beyond the veil shall be exercised by the priests. If any outsider will approach, he shall be killed."
Moses and Aaron, with their sons, shall make camp before the tabernacle of the covenant, that is, on the east side, holding the custody of the Sanctuary in the midst of the sons of Israel. Whatever foreigner approaches it shall die.