John Gills Exposition of the Bible Commentary - Deuteronomy 2:36
From Aroer, which is by the brink of the river Arnon .... Upon the border of Moab, and the principal city of it; see Jeremiah 48:19 . and from the city that is by the river ; or even the city that is in the midst of the river, the city Aroer, which seems to be meant; see Joshua 12:2 . This river is afterwards called the river of Gad, 2 Samuel 24:5 in the midst of it Aroer was, perhaps because it was possessed by the tribe of Gad: even unto Gilead ; Mount Gilead and the country... read more
Matthew Henry's Complete Commentary - Deuteronomy 2:24-37
God having tried the self-denial of his people in forbidding them to meddle with the Moabites and Ammonites, and they having quietly passed by those rich countries, and, though superior in number, not made any attack upon them, here he recompenses them for their obedience by giving them possession of the country of Sihon king of the Amorites. If we forbear what God forbids, we shall receive what he promises, and shall be no losers at last by our obedience, though it may seem for the present to... read more