'Edge' in the Bible

King Sihon of the Amorites who lived in Heshbon and ruled from Aroer (on the edge of the Arnon Valley) -- including the city in the middle of the valley and half of Gilead -- all the way to the Jabbok Valley bordering Ammonite territory.

Their territory started from Aroer (on the edge of the Arnon Valley), included the city in the middle of the valley, the whole plain of Medeba as far as Dibon,

Their territory started at Aroer (on the edge of the Arnon Valley) and included the city in the middle of the valley, the whole plain of Medeba,

The southern side started on the edge of Kiriath Jearim and extended westward to the spring of the waters of Nephtoah.

The border then descended to the edge of the hill country near the Valley of Ben Hinnom located in the Valley of the Rephaites to the north. It descended through the Valley of Hinnom to the slope of the Jebusites to the south and then down to En Rogel.