Leviticus 22:3-5

New Century Version

³ Say to them: ‘If any one of your descendants from now on is unclean and comes near the offerings that the Israelites made holy for me, that person must be cut off from appearing before me. I am the Lord.

⁴ “‘If one of Aaron’s descendants has a harmful skin disease, or if he discharges a body fluid, he cannot eat the holy offerings until he becomes clean. He could also become unclean from touching a dead body, from his own semen,^{[a] 5} from touching any unclean crawling animal, or from touching an unclean person (no matter what made the person unclean).