Leviticus 21:17-23

17"Speak to Aaron, saying, None of your offspring throughout their generations who has a blemish may approach to offer the bread of his God.

18For no one who has a blemish shall draw near, a man blind or lame, or one who has a mutilated face or a limb too long,

19or a man who has an injured foot or an injured hand,

20or a hunchback or a dwarf or a man with a defect in his sight or an itching disease or scabs or crushed testicles.

21No man of the offspring of Aaron the priest who has a blemish shall come near to offer the Lord's food offerings; since he has a blemish, he shall not come near to offer the bread of his God.

22He may eat the bread of his God, both of the most holy and of the holy things,

23but he shall not go through the veil or approach the altar, because he has a blemish, that he may not profane my sanctuaries, for I am the Lord who sanctifies them."