What does 1 Chronicles 6:54-81 mean?

These are their dwelling places according to their settlements within their borders: to the sons of Aaron of the clans of Kohathites, for theirs was the first lot, to them they gave Hebron in the land of Judah and its surrounding pasturelands, but the fields of the city and its villages they gave to Caleb the son of Jephunneh. To the sons of Aaron they gave the cities of refuge: Hebron, Libnah with its pasturelands, Jattir, Eshtemoa with its pasturelands, Hilen with its pasturelands, Debir with its pasturelands, Ashan with its pasturelands, and Beth-shemesh with its pasturelands; and from the tribe of Benjamin, Gibeon, Geba with its pasturelands, Alemeth with its pasturelands, and Anathoth with its pasturelands. All their cities throughout their clans were thirteen. To the rest of the Kohathites were given by lot out of the clan of the tribe, out of the half-tribe, the half of Manasseh, ten cities. To the Gershomites according to their clans were allotted thirteen cities out of the tribes of Issachar, Asher, Naphtali and Manasseh in Bashan. To the Merarites according to their clans were allotted twelve cities out of the tribes of Reuben, Gad, and Zebulun. So the people of Israel gave the Levites the cities with their pasturelands. They gave by lot out of the tribes of Judah, Simeon, and Benjamin these cities that are mentioned by name. And some of the clans of the sons of Kohath had cities of their territory out of the tribe of Ephraim. They were given the cities of refuge: Shechem with its pasturelands in the hill country of Ephraim, Gezer with its pasturelands, Jokmeam with its pasturelands, Beth-horon with its pasturelands, Aijalon with its pasturelands, Gath-rimmon with its pasturelands, and out of the half-tribe of Manasseh, Aner with its pasturelands, and Bileam with its pasturelands, for the rest of the clans of the Kohathites. To the Gershomites were given out of the clan of the half-tribe of Manasseh: Golan in Bashan with its pasturelands and Ashtaroth with its pasturelands; and out of the tribe of Issachar: Kedesh with its pasturelands, Daberath with its pasturelands, Ramoth with its pasturelands, and Anem with its pasturelands; out of the tribe of Asher: Mashal with its pasturelands, Abdon with its pasturelands, Hukok with its pasturelands, and Rehob with its pasturelands; and out of the tribe of Naphtali: Kedesh in Galilee with its pasturelands, Hammon with its pasturelands, and Kiriathaim with its pasturelands. To the rest of the Merarites were allotted out of the tribe of Zebulun: Rimmono with its pasturelands, Tabor with its pasturelands, and beyond the Jordan at Jericho, on the east side of the Jordan, out of the tribe of Reuben: Bezer in the wilderness with its pasturelands, Jahzah with its pasturelands, Kedemoth with its pasturelands, and Mephaath with its pasturelands; and out of the tribe of Gad: Ramoth in Gilead with its pasturelands, Mahanaim with its pasturelands, Heshbon with its pasturelands, and Jazer with its pasturelands.