Bible Verses About Leprosy: Excluded from priest's office

Speak to Aaron and to his sons, that they beware of those things that are consecrated of the children of Israel: and defile not the name of the things sanctified to me, which they offer. I am the Lord.

Say to them and to their posterity: Every man of your race, that approacheth to those things that are consecrated, and which the children of Israel have offered to the Lord, in whom there is uncleanness, shall perish before the Lord. I am the Lord.

The man of the seed of Aaron, that is a leper, or that suffereth a running of the seed, shall not eat of those things that are sanctified to me, until he be healed. He that toucheth any thing unclean by occasion of the dead: and he whose seed goeth from him as in generation: