Deuteronomy 2:37
Only to the land of the children of Ammon you came not, nor to any place of the river Jabbok, nor to the cities in the mountains, nor to whatever the LORD our God forbade us.
Torrey's Topical Textbook—AKJV

Joshua 12:2
Sihon king of the Amorites, who dwelled in Heshbon, and ruled from Aroer, which is on the bank of the river Arnon, and from the middle of the river, and from half Gilead, even to the river Jabbok, which is the border of the children of Ammon;
Torrey's Topical Textbook—AKJV