Leviticus 22:1-5

¹And the Lord said to Moses,

²Give orders to Aaron and to his sons to keep themselves separate from the holy things of the children of Israel which they give to me, and not to make my holy name common: I am the Lord,

³Say to them, If any man of all your seed through all your generations, being unclean, comes near the holy things which the children of Israel make holy to the Lord, he will be cut off from before me: I am the Lord.

⁴No man of the seed of Aaron who is a leper, or who has a flow from his body, may take of the holy food till he is clean. And any man touching anything which is unclean because of the dead, or any man whose seed goes from him;

⁵Or anyone touching any unclean thing which goes flat on the earth, or someone by whom he may be made unclean in any way whatever;