Albert Barnes Commentary Leviticus 22:3

"Say unto them, Whosoever he be of all your seed throughout your generations, that approacheth unto the holy things, which the children of Israel hallow unto Jehovah, having his uncleanness upon him, that soul shall be cut off from before me: I am Jehovah." — Leviticus 22:3 (ASV)

Cut off from my presence - that is, excluded from the sanctuary. See Leviticus 20:17.