Leviticus 21:11-15

¹¹Neither shall he go in to any dead body; even on his father, and on his mother shall he not defile himself.

¹²And out of the sanctuary shall he not go, that he may not profane the sanctuary of his God; for the crown of the anointing oil of his God is upon him: I am the Lord.

¹³And he shall take a wife in her virgin state.

¹⁴A widow, and a divorced woman, and one profaned, and a harlot, these shall he not take; but a virgin of his own people shall he take for wife;

¹⁵So that he may not profane his seed among his people; for I, the Lord, do sanctify him.