Thematic Bible: Debarred sons of aaron from exercise of priestly offices

"Say to Aaron, 'None of your seed throughout their generations who has a blemish, may approach to offer the bread of his God. For whatever man he is that has a blemish, he shall not draw near: a blind man, or a lame, or he who has a flat nose, or any deformity, or a man who has an injured foot, or an injured hand, read more.
or hunchbacked, or a dwarf, or one who has a defect in his eye, or an itching disease, or scabs, or who has damaged testicles; no man of the seed of Aaron the priest who has a blemish, shall come near to offer the offerings of Yahweh made by fire. Since he has a blemish, he shall not come near to offer the bread of his God. He shall eat the bread of his God, both of the most holy, and of the holy. He shall not come near to the veil, nor come near to the altar, because he has a blemish; that he may not profane my sanctuaries, for I am Yahweh who sanctifies them.'"