They are to carry out their responsibilities for the tent of meeting, for the holy place, and for their relatives, the descendants of Aaron, in the service of the Lord’s temple.’
Moses, Aaron, and his sons, who performed the duties of the sanctuary as a service on behalf of the Israelites, camped in front of the tabernacle on the east, in front of the tent of meeting towards the sunrise. Any unauthorised person who came near it was to be put to death.
He may assist his brothers to fulfil responsibilities at the tent of meeting, but he must not do the work. This is how you are to deal with the Levites regarding their duties.’