Albert Barnes Commentary Leviticus 21:16-24

"And Jehovah spake unto Moses, saying, Speak unto Aaron, saying, Whosoever he be of thy seed throughout their generations that hath a blemish, let him not approach to offer the bread of his God. For whatsoever man he be that hath a blemish, he shall not approach: a blind man, or a lame, or he that hath a flat nose, or anything superfluous, or a man that is broken-footed, or broken-handed, or crook-backed, or a dwarf, or that hath a blemish in his eye, or is scurvy, or scabbed, or hath his stones broken; no man of the seed of Aaron the priest, that hath a blemish, shall come nigh to offer the offerings of Jehovah made by fire: he hath a blemish; he shall not come nigh to offer the bread of his God. He shall eat the bread of his God, both of the most holy, and of the holy: only he shall not go in unto the veil, nor come nigh unto the altar, because he hath a blemish; that he profane not my sanctuaries: for I am Jehovah who sanctifieth them. So Moses spake unto Aaron, and to his sons, and unto all the children of Israel." — Leviticus 21:16-24 (ASV)

He was not treated as an outcast but enjoyed his privileges as a son of Aaron, except in regard to active duties (Leviticus 21:20).

A dwarf – One who is small and underdeveloped, either short, as in the text, or slender, as in the margin. It is hardly likely that dwarfishness would be overlooked in this list. Most critical authorities agree.

Scurvy or scabbed – These words most probably include all affected with any skin disease (Leviticus 21:22).

See the note on Leviticus 2:3 and the note on Leviticus 6:25.

(Leviticus 21:23) Sanctuaries – The places especially holy, including the Most Holy Place, the Holy Place, and the altar.

This law is, of course, to be regarded as one development of the great principle that all that is devoted to the service of God should be as perfect as possible of its kind.