Leviticus 21:12-14

¹²He 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.

¹³And let him take as his wife one who has not had relations with a man.

¹⁴A 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.