Deuteronomy 2:24

“Rise ye up, take your journey, and pass over the river Arnon, etc.] Which was on the border of Moab, and divided between Moab and the Amorites, (<042113>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 “<042121>Numbers 21:21 see Gill on “<042126>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.”

“Rise ye up . . . and pass over the river Arnon--At its mouth, this stream is eighty-two feet wide and four deep. It flows in a channel banked by perpendicular cliffs of sandstone. At the date of the Israelitish migration to the east of the Jordan, the whole of the fine country lying between the Arnon and the Jabbok including the mountainous tract of Gilead, had been seized by the Amorites, who, being one of the nations doomed to destruction (see Deu 7:2; Deu 20:16), were utterly exterminated. Their country fell by right of conquest into the hands of the Israelites. Moses, however, considering this doom as referring solely to the Amorite possessions west of Jordan, sent a pacific message to…”

“2:24 The Arnon Gorge is the deep canyon formed by the Arnon River; it sometimes marked the border between Moab and Edom (see Num 21:13). It rises deep in the Arabian Desert and empties into the Dead Sea midway along its eastern shore. • Sihon the Amorite controlled the area east of the Jordan, north of the Arnon, and south of the Ammonite territories (see Num 21:21-35). He is not known outside of the Bible. His capital, Heshbon, was probably about fifteen miles southwest of Rabbath Ammon and is usually identified with the impressive ruins at Tell Hesban.”

“the river Arnon: Deu 2:36; Num 21:13-15; Jdg 11:18-21 behold: Jos 6:16; Ch2 36:23; Ezr 1:2; Jer 27:5; Eze 29:20; Dan 2:38, Dan 4:17 begin to possess it: Heb. begin, possess. Deuteronomy 2:25”

“The Help of God in the Conquest of the Kingdom of Sihon. - Deu 2:24. Whereas the Israelites were not to make war upon the kindred tribes of Edomites, Moabites, and Ammonites, or drive them out of the possessions given to them by God; the Lord had given the Amorites, who had forced as way into Gilead and Bashan, into their hands. Deu 2:24-25 While they were encamped on the Arnon, the border of the Amoritish king of Sihon, He directed them to cross this frontier and take possession of the land of Sihon, and promised that He would give this king with all his territory into their hands, and that henceforward ("this day," the day on which Israel crossed the Arnon) He would put fear and terror of…”