Leviticus 21:10-15 - Rules For The High Priest

¹⁰ And he who is the chief priest among his brothers, on whose head the holy oil has been put, who is marked out to put on the holy robes, may not let his hair go loose or have his clothing out of order as a sign of sorrow. ¹¹ He may not go near any dead body or make himself unclean for his father or his mother; ¹² He may not go out of the holy place or make the holy place of his God common; for the crown of the holy oil of his God is on him: I am the Lord.

¹³ And let him take as his wife one who has not had relations with a man. ¹⁴ A widow, or one whose husband has put her away, or a common woman of loose behaviour, may not be the wife of a priest; but let him take a virgin from among his people. ¹⁵ And he may not make his seed unclean among his people, for I the Lord have made him holy.