Leviticus 21:19

Speak unto Aaron, saying, Whosoever [he be] of thy seed in their generations that hath [any] 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 any thing superfluous,

Or crookbackt, or a dwarf, or that hath a blemish in his eye, or be scurvy, or scabbed, or hath his stones broken;

No man that hath a blemish of the seed of Aaron the priest shall come nigh to offer the offerings of the LORD made by fire: he hath a blemish; he shall not come nigh to offer the bread of his God.