Deuteronomy 3:16
And to the Reubenites and to the Gadites I gave from Gilead even to the river Arnon half the valley, and the border even to the river Jabbok, which is the border of the children of Ammon:And to the Reubenites and to the Gadites I gave from Gilead even to the river Arnon half the valley, and the border even to the river Jabbok, which is the border of the children of Ammon: