Leviticus 21:4

1 And Jehovah said unto Moses, Speak unto the priests, the sons of Aaron, and say unto them, There shall none defile himself for the dead among his people;

2 except for his kin, that is near unto him, for his mother, and for his father, and for his son, and for his daughter, and for his brother,

3 and for his sister a virgin, that is near unto him, that hath had no husband; for her may he defile himself.

4 He shall not defile himself, being a chief man among his people, to profane himself.

5 They shall not make baldness upon their head, neither shall they shave off the corner of their beard, nor make any cuttings in their flesh.

6 They shall be holy unto their God, and not profane the name of their God; for the offerings of Jehovah made by fire, the bread of their God, they do offer: therefore they shall be holy.

7 They shall not take a woman that is a harlot, or profane; neither shall they take a woman put away from her husband: for he is holy unto his God.