Leviticus 21:7-8, 23

“Priests may not marry a woman defiled by prostitution, and they may not marry a woman who is divorced from her husband, for the priests are set apart as holy to their God. You must treat them as holy because they offer up food to your God. You must consider them holy because I, the LORD, am holy, and I make you holy.

Yet because of his physical defect, he may not enter the room behind the inner curtain or approach the altar, for this would defile my holy places. I am the LORD who makes them holy.”