Joshua 21:38-41

³⁸And out of the tribe of Gad, Ramoth in Gilead with her suburbs, to be a city of refuge for the slayer; and Mahanaim with her suburbs,

³⁹Heshbon with her suburbs, Jazer with her suburbs; four cities in all.

⁴⁰So all the cities for the children of Merari by their families, which were remaining of the families of the Levites, were by their lot twelve cities.

⁴¹All the cities of the Levites within the possession of the children of Israel were forty and eight cities with their suburbs.