Leviticus 21:6-8

Living Bible

⁶ They shall be holy unto their God and shall not dishonor and profane his name; otherwise they will be unfit to make food offerings by fire to the Lord their God. ⁷ A priest shall not marry a prostitute, nor a woman of another tribe, and he shall not marry a divorced woman, for he is a holy man of God. ⁸ The priest is set apart to offer the sacrifices of your God; he is holy, for I, the Lord who sanctifies you, am holy.