Leviticus 21:21-23

²¹No descendant of Aaron the priest who has a defect is allowed to come and present the food offerings to the Lord. Because he has a defect, he must not come and offer the food of his God.

²²He is still allowed to eat the food from the Most Holy Place of his God and also from the sanctuary,

²³but because he has a defect, he is not allowed to go near the curtain or the altar, so that my sanctuary and everything in it are not made unclean, because I am the Lord who makes them holy.”