Albert Barnes Commentary 1 Chronicles 5:11

"And the sons of Gad dwelt over against them, in the land of Bashan unto Salecah:" — 1 Chronicles 5:11 (ASV)

From this passage and from the subsequent account of the Manassites (1 Chronicles 5:23–24), the Gadites extended themselves to the north at the expense of their brothers, gradually occupying a considerable portion of the tract originally allotted to the “half tribe.”