Leviticus 21:8, 15, 23

You shall sanctify him, for he offers the bread of your God. He shall be holy to you, for I, the LORD, who sanctify you, am holy.

that he may not profane his offspring among his people, for I am the LORD who sanctifies him.”

but he shall not go through the veil or approach the altar, because he has a blemish, that he may not profane my sanctuaries, for I am the LORD who sanctifies them.”