Leviticus 21:3-6 American Standard Version (ASV)

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.

Leviticus 21