Parallel
Deuteronomy 3:16
Brenton's English Septuagint · Berean Standard Bible
And to Ruben and to Gad I gave [the land] under Galaad as far as the brook of Arnon, the border between the brook and as far as Jaboc; the brook [is] the border to the children of Amman.
and to the Reubenites and Gadites I gave the territory from Gilead to the Arnon Valley (the middle of the valley was the border) and up to the Jabbok River, the border of the Ammonites.