Leviticus 22:2-3

22:2 “Tell Aaron and his sons that they must deal respectfully with the holy offerings of the Israelites, which they consecrate to me, so that they do not profane my holy name. I am the Lord. 22:3 Say to them, ‘Throughout your generations, if any man from all your descendants approaches the holy offerings which the Israelites consecrate to the Lord while he is impure, that person must be cut off from before me. I am the Lord.

Leviticus 22:10

22:10 “‘No lay person may eat anything holy. Neither a priest’s lodger nor a hired laborer may eat anything holy,

Leviticus 22:14-16

22:14 “‘If a man eats a holy offering by mistake, he must add one fifth to it and give the holy offering to the priest. 22:15 They must not profane the holy offerings which the Israelites contribute to the Lord, 22:16 and so cause them to incur a penalty for guilt when they eat their holy offerings, for I am the Lord who sanctifies them.’”