Leviticus 21:17-23

17“Say to Aaron, ‘For the generations to come, none of your descendants who has a physical defect may approach to offer the food of his God.

18No man who has any defect may approach—no man who is blind, lame, disfigured, or deformed; 19no man who has a broken foot or hand, 20or who is a hunchback or dwarf, or who has an eye defect, a festering rash, scabs, or a crushed testicle.

21No descendant of Aaron the priest who has a defect shall approach to present the food offerings to the LORD. Since he has a defect, he is not to come near to offer the food of his God. 22He may eat the most holy food of his God as well as the holy food, 23but because he has a defect, he must not go near the veil or approach the altar, so as not to desecrate My sanctuaries. For I am the LORD who sanctifies them.’”