Leviticus 21:21-23

²¹Each man of the seed of Aaron the priest, that hath a wem, shall not nigh to offer sacrifices to the Lord, neither to offer loaves to his God;

²²nevertheless he shall eat the loaves that be offered in the saintuary,

²³so only that he enter not within the veil; he shall not nigh to the altar, for he hath a wem, and he shall not defoul my saintuary; I am the Lord, that hallow them.