Numbers [In the desert] 18:22-23

²²Henceforth the children of Israel God prevails shall not come near the Tent of Meeting, lest they bear sin, and die.

²³But the Levites Descendants of United with shall do the service of the Tent of Meeting, and they shall bear their iniquity. It shall be a statute forever throughout all your generations. Among the children of Israel God prevails, they shall have no inheritance.