Leviticus 21:10-15

“The high priest has the highest rank of all the priests. The anointing oil has been poured on his head, and he has been ordained to wear the priestly garments. He must never leave his hair uncombed or tear his clothing. He must not defile himself by going near a dead body. He may not make himself ceremonially unclean even for his father or mother. He must not defile the sanctuary of his God by leaving it to attend to a dead person, for he has been made holy by the anointing oil of his God. I am the LORD. “The high priest may marry only a virgin. He may not marry a widow, a woman who is divorced, or a woman who has defiled herself by prostitution. She must be a virgin from his own clan, so that he will not dishonor his descendants among his clan, for I am the LORD who makes him holy.”