Leviticus 21:10-15
Rules for the High Priest
21:10 “‘The high priest – who is greater than his brothers, on whose head the anointing oil is poured, who has been ordained to wear the priestly garments – must neither dishevel the hair of his head nor tear his garments.
21:11 He must not go where there is any dead person; he must not defile himself even for his father and his mother.
21:12 He must not go out from the sanctuary and must not profane the sanctuary of his God, because the dedication of the anointing oil of his God is on him. I am the Lord.
21:13 He must take a wife who is a virgin.
21:14 He must not marry a widow, a divorced woman, or one profaned by prostitution; he may only take a virgin from his people as a wife.
21:15 He must not profane his children among his people, for I am the Lord who sanctifies him.’”