Bible Verses About Priests: No blemished or defective persons could be consecrated

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.