This very day I will begin to put the dread and fear of you upon all the nations under heaven. They will hear the reports of you and tremble in anguish because of you.”
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.
Commenting on Deuteronomy 2:24-37
This day will I begin to put the dread of thee,.... And so fulfil the prophecies delivered by Moses in Exo 15:14. and the fear of thee upon the nations that are under the whole heaven; not only the neighbouring nations, the Edomites, Moabites, Ammonites, Philistines, and Canaanites, but nations more remote even throughout the whole world: who shall report of thee; of what was...
This day will I begin to put the dread of thee and the fear of thee upon the nations [that are] under the whole heaven, who shall hear report of thee, and shall tremble, and be in anguish because of thee. (l) This declares that the hearts of men are in God's hands either to be made faint, or bold.