He inhabited - i. e. Reuben. Eastward the Reubenites inhabited as far as the commencement of the great Syrian Desert, which extended all the way from the river Euphrates to their borders.
Related Commentaries of 1 Chronicles 5:9
1 Chronicles 5:9
9 And eastward he inhabited unto the entering in of the wilderness from the river Euphrates: because their cattle were multiplied in the land of Gilead.