Leviticus 21:17-21

17“Say to Aaron, ‘Throughout their generations none of your descendants who has any [physical] defect shall approach [the altar] to present the food of his God.

18For no man who has a defect shall approach [God’s altar as a priest]: no man who is blind or lame, or who has a disfigured face, or any deformed limb,

19or a man who has a broken foot or a broken hand,

20or a hunchback or a dwarf, or one who has a defect in his eye or eczema or scabs or crushed testicles.

21No man among the descendants of Aaron the priest who has a [physical] defect and is disfigured or deformed is to approach [the altar] to present the offerings of the Lord by fire. He has a defect; he shall not approach [the altar] to present the food of his God.