He shall not become unclean as a relative by marriage among his people, and so profane himself.

and so cause them [by neglect of any essential observance] to bear the punishment of guilt when they eat their holy things; for I am the Lord who sanctifies them.’”

So he shall make atonement for the Holy Place (Holy of Holies) because of the uncleanness and transgressions of the Israelites, for all their sins. He shall also do this for the Tent of Meeting which is among them in the midst of their uncleanness (impurities).