Leviticus 21:7-15

7A priest must not marry a woman defiled by prostitution or divorced by her husband, for the priest is holy to his God. 8You are to regard him as holy, since he presents the food of your God. He shall be holy to you, because I the LORD am holy—I who set you apart. 9If a priest’s daughter defiles herself by prostituting herself, she profanes her father; she must be burned in the fire.

10The priest who is highest among his brothers, who has had the anointing oil poured on his head and has been ordained to wear the priestly garments, must not let his hair hang loose1 or tear his garments. 11He must not go near any dead body; he must not defile himself, even for his father or mother. 12He must not leave or desecrate the sanctuary of his God, for the consecration of the anointing oil of his God is on him. I am the LORD.

13The woman he marries must be a virgin. 14He is not to marry a widow, a divorced woman, or one defiled by prostitution. He is to marry a virgin from his own people, 15so that he does not defile his offspring among his people, for I am the LORD who sanctifies him.”