John Gill Commentary Deuteronomy 2:25

"This day will I begin to put the dread of thee and the fear of thee upon the peoples that are under the whole heaven, who shall hear the report of thee, and shall tremble, and be in anguish because of thee." — Deuteronomy 2:25 (ASV)

This day will I begin to put the dread of thee
And so fulfil the prophecies delivered by Moses in (Exodus 15:14–16)

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 done for Israel in Egypt, and at the Red sea, and in the wilderness; and particularly of the delivery of Sihon and Og, kings of the Amorites, and of their kingdoms into their hands:

and shall tremble, and be in anguish because of thee ;
lest they should proceed on, and make conquests of their lands also; see (Joshua 2:9–11) .