Joshua 21:38-41

³⁸All the cities of the children of Merari by their families and kindreds, were twelve.

³⁹So all the cities of the Levites within the possession of the children of Israel were forty-eight,

⁴⁰With their suburbs, each distributed by the families.

⁴¹And the Lord God gave to Israel all the land that he had sworn to give to their fathers: and they possessed it and dwelt in it.