John Gill Commentary Joshua 22:4

"And now Jehovah your God hath given rest unto your brethren, as he spake unto them: therefore now turn ye, and get you unto your tents, unto the land of your possession, which Moses the servant of Jehovah gave you beyond the Jordan." — Joshua 22:4 (ASV)

And now the Lord your God has given rest to your brethren ,
as he promised them
As in (Joshua 21:44); see (Deuteronomy 12:9Deuteronomy 12:10);

therefore now return you, and get you to your tents ;
not their military tents in the army, from which they now came to Joshua, but their houses, as the Greek version, and their cities, as the Targum; they having been so long used to tents in the wilderness, and during the wars in Canaan, this was a familiar word for their dwellings:

[and] to the land of your possession, which Moses the servant of the
Lord gave you, on the other side Jordan ;
before his death, on condition of doing what they now had done; even the land of Gilead and Bashan, beyond Jordan.