Leviticus 21:5-7

Revised Standard Version

⁵ They shall not make tonsures upon their heads, nor shave off the edges of their beards, nor make any cuttings in their flesh. ⁶ They shall be holy to their God, and not profane the name of their God; for they offer the offerings by fire to the Lord, the bread of their God; therefore they shall be holy. ⁷ They shall not marry a harlot or a woman who has been defiled; neither shall they marry a woman divorced from her husband; for the priest is holy to his God.