| Barnes' Notes on the Bible After this verse, the Septuagint introduces a passage (in part a repetition from Joshua 19:49-50), recording the grant of a special inheritance to Joshua, and also that he buried at Timnath-serah the flint-knives with which he had circumcised (Joshua 5:2 note) the people after the passage of Jordan. The latter statement, which has the authority of the Septuagint only, is a Jewish legend of early date.
Gill's Exposition of the Entire BibleThese cities were everyone with their suburbs round about them,.... Which reached to the space of two thousand cubits on every side; and such a space was assigned to everyone of the above cities for their cattle, to keep them in and lay up provision for them: thus were all their cities; six of them cities of refuge, and forty two for the priests and Levites to dwell in, and for the commodious use of their herds and flocks.
Geneva Study BibleThese cities were every one with their suburbs round about them: thus were all these cities.
Matthew Henry's Concise Commentary21:9-42 By mixing the Levites with the other tribes, they were made to see that the eyes of all Israel were upon them, and therefore it was their concern to walk so that their ministry might not be blamed. Every tribe had its share of Levites' cities. Thus did God graciously provide for keeping up religion among them, and that they might have the word in all parts of the land. Yet, blessed be God, we have the gospel more diffused amongst us. | 
