Joshua 21:31

Helkath with her suburbs, and Rehob with her suburbs; four cities.

The verse forms part of the allotment of forty-eight cities to the tribe of Levi. Those cities were not gathered into one continuous tribal territory as with the other tribes. They were instead dispersed at intervals throughout the whole land of inheritance. That scattering provided Levi with dwelling places and service centers in every portion of the country rather than a single separate inheritance.