Leviticus 22:1

1The LORD spoke to Moses, saying,

2“Tell Aaron and his sons to separate themselves from the holy things of the children of Israel, which they make holy to me, and that they not profane my holy name. I am the LORD.

3“Tell them, ‘If anyone of all your offspring throughout your generations approaches the holy things which the children of Israel make holy to the LORD, having his uncleanness on him, that soul shall be cut off from before me. I am the LORD.