Deuteronomy 2:24
Rise ye up, take your journey, and pass over the river Arnon: behold, I have given into thine hand Sihon the Amorite, king of Heshbon, and his land: begin to possess it, and contend with him in battle.
Rise ye up, take your journey, and pass over the river Arnon,.... Which was on the border of Moab, and divided between Moab and the Amorites, Numbers 21:13
behold, I have given into thy hand Sihon, the Amorite, king of Heshbon, and his land; that is, he had determined to give it to the Israelites, for as yet it was not actually given; of this king, and the place he was king of, See Gill on "Numbers 21:21 see Gill on "Numbers 21:26" begin to possess it, and contend with him in battle; provoke him to war, fight with him, take his land from him, and enter upon the possession of it, hereby assuring of victory.