Deuteronomy 2:36-37

36From Aroer, which is on the edge of the Arnon Valley, and from the city which is in the valley, as far as Gilead, there was no city [whose wall was] too high and too strong for us; the Lord our God handed over everything to us.

37Only you did not go near the land of the sons of Ammon, all along the river Jabbok and the cities of the hill country, and wherever the Lord our God had forbidden us.