The Lord tells Moses to speak to the priests. They must not defile themselves for a dead person, except for close relatives: mother, father, son, daughter, brother and the virgin sister who depends on him. They must not shave their heads, shave off the edges of their beards or cut their bodies, because they are holy to their God and offer the Lord's food. They must not marry a prostitute or a divorced woman. The daughter of a priest who prostitutes herself profanes her father.
The high priest has still stricter rules: he must not let his hair hang loose or tear his clothes, must not go near any dead body, not even his father or mother, and must not leave the sanctuary for it. He must marry a virgin of his own people, so as not to profane his offspring, for the anointing oil of his God is on him.
The last part concerns physical defects: no descendant of Aaron with a defect may approach to offer the food of God, such as someone blind, lame, disfigured, with a broken limb or with a skin disease. Yet he may eat of the holy food, though he may not go in before the veil or approach the altar, so that he does not profane the Lord's sanctuaries, who sanctifies them.