Numbers 18:23

But the Levites shall do the service of the tabernacle of the congregation,.... In guarding the tabernacle, that no unclean persons enter into it, or any others take anything out of it, and in assisting the priests in their service, and carrying the vessels of the sanctuary when required:

and they shall bear their iniquity: that is, when they fail in the duty of their office, are not careful in their service and work, and business appointed them; if either they did not do their business themselves, or suffered others to do it, or such to come to the tabernacle who should not, they would be blameworthy and suffer for it:

[it shall be] a statute for ever throughout your generations, that the children of Israel they have no inheritance; having such a plentiful provision made for them, by a statute as durable as this.