'Edge' in the Bible

From Aroer, which [is] on the edge of the wadi of Arnon and the city that [was] in the wadi on up to Gilead, [there] was not a city that was inaccessible to us; Yahweh our God gave {everything} {to us}.

And [so] we took possession of this land at that time, from Aroer, which [is] on the [edge of the] wadi of Arnon, and [also] half of the hill country of Gilead and its towns I gave to the Reubenites and to the Gadites.

[then] you shall certainly strike down the inhabitants of that town with the {edge} of [the] sword; you shall destroy it and everything in it, its domestic animals with [the] {edge} of [the] sword.

And Yahweh your God will give it into your hand, and you shall kill all its males with the {edge} of [the] sword.