Leviticus 21:7-8, 23

They shall not marry a prostitute or a woman who has been defiled, neither shall they marry a woman divorced from her husband, for the priest is holy to his God. 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.

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.”