Leviticus 21:17-20

17“Say to Aaron: ‘For the generations to come none of your descendants who has a defect may come near to offer the food of his God. 18No man who has any defect may come near: no man who is blind or lame, disfigured or deformed; 19no man with a crippled foot or hand, 20or who is a hunchback or a dwarf, or who has any eye defect, or who has festering or running sores or damaged testicles.