Leviticus 22:1-4

¹And Jehovah spake unto Moses, saying,

²Speak unto Aaron and to his sons, that they separate themselves from the holy things of the children of Israel, which they hallow unto me, and that they profane not my holy name: I am Jehovah.

³Say 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.

⁴What man soever of the seed of Aaron is a leper, or hath an issue; he shall not eat of the holy things, until he be clean. And whoso toucheth anything that is unclean by the dead, or a man whose seed goeth from him;