Leviticus 21:7

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

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

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

8Thou shalt sanctify him therefore; for he offereth the bread of thy God: he shall be holy unto thee: for I the LORD, which sanctify you, am holy.

9And the daughter of any priest, if she profane herself by playing the whore, she profaneth her father: she shall be burnt with fire.