John Gill Commentary Joshua 21:38

"And out of the tribe of Gad, Ramoth in Gilead with its suburbs, the city of refuge for the manslayer, and Mahanaim with its suburbs," — Joshua 21:38 (ASV)

And out of the tribe of Gad
Which also, as that of Reuben, lay on the other side Jordan:

Ramoth in Gilead with her suburbs ;
of which see (Joshua 20:8) ;

[to be] a city of refuge for the slayer ;
and is the sixth and last city of refuge in this account:

and Mahanaim with her suburbs ;
here it was the angels met Jacob, which gave rise to the name of the place, (Genesis 32:1Genesis 32:2) ; afterwards a city was built here, and was on the borders of the tribe of Gad, and belonged to it, (Joshua 13:26) ; mention is made of it in other places, (2 Samuel 2:8) (1 Kings 2:8) .