John Gill Commentary Joshua 21:36

"And out of the tribe of Reuben, Bezer with its suburbs, and Jahaz with its suburbs," — Joshua 21:36 (ASV)

And out of the tribe of Reuben, Bezer with her suburbs
Which was a city of refuge, and the fifth of them in this account, though not observed as such here, but is in the Greek version; see (Joshua 20:8); and Jahazah with her suburbs; called Jahaz, (See Gill on Numbers 21:23).