Leviticus 21:13

11He must not go in to any dead body, or defile himself for his father or for his mother.

12He shall not go out of the sanctuary, nor profane the sanctuary of his God; for the crown of the anointing oil of his God is upon him. I am the LORD.

13“‘He shall take a wife in her virginity.

14He shall not marry a widow, or one divorced, or a woman who has been defiled, or a prostitute. He shall take a virgin of his own people as a wife.

15He shall not profane his offspring among his people, for I am the LORD who sanctifies him.’”