Deuteronomy 3:16

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 unto the Reubenites and unto the Gadites I gave from Gilead even unto the river Arnon half the valley, and the border even unto the river Jabbok, which is the border of the children of Ammon;

To the Reubenites and to the Gadites I gave from Gilead even to the valley of the Arnon, the middle of the valley, and its border, even to the river Jabbok, which is the border of the children of Ammon;