Leviticus 21:6 in the King James Version
They 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.
Context
5 “‘They shall not shave their heads or shave off the corners of their beards or 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 of the LORD made by fire, the bread of their God. Therefore they shall be holy.
7 “‘They shall not marry a woman who is a prostitute, or profane. A priest shall not marry a woman divorced from her husband; for he is holy to his God.