Leviticus 21:1-7

MLV(i) 1 And Jehovah said to Moses, Speak to the priests, the sons of Aaron and say to them, There will none defile himself for the dead among his people, 2 except for his kin, who is near to 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, who is near to him, who has had no husband, for her he may defile himself. 4 He will not defile himself, who is a chief man among his people, to profane himself. 5 They will not make baldness upon their head, neither will they shave off the corner of their beard, nor make any cuttings in their flesh.
6 They will be holy to their God and not profane the name of their God. For they offer the offerings of Jehovah made by fire, the bread of their God. Therefore they will be holy.
7 They will not take a woman who is a prostitute, or profane, neither will they take a woman put away from her husband, for he is holy to his God.