Leviticus 21:21
No man that has a blemish of the descendants of Aaron the priest shall come near to offer the offerings of the LORD made by fire: he has a blemish; he shall not come near to offer the bread of his God.
Leviticus 21:6
They shall be holy unto their God, and not profane the name of their God: for the offerings of the LORD made by fire, and the bread of their God, they do offer: therefore they shall be holy.
Leviticus 21:8
You shall sanctify him therefore; for he offers the bread of your God: he shall be holy unto you: for I the LORD, who sanctifies you, am holy.
Leviticus 21:17
Speak unto Aaron, saying, Whosoever he be of your descendants in their generations that has any blemish, let him not approach to offer the bread of his God.