יַבֹּק

But you did not go near the land of the Ammonites, or the land along the banks of the Jabbok River, or the cities of the hill country, or any place that the LORD our God had forbidden.

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.

The king of the Ammonites answered Jephthah’s messengers, “When Israel came up out of Egypt, they seized my land, from the Arnon to the Jabbok and all the way to the Jordan. Now, therefore, restore it peaceably.”

seizing all the land from the Arnon to the Jabbok and from the wilderness to the Jordan.

Sihon king of the Amorites, who lived in Heshbon. He ruled from Aroer on the rim of the Arnon Valley, along the middle of the valley, up to the Jabbok River (the border of the Ammonites), that is, half of Gilead,