And the LORD will do to them as He did to Sihon and Og, the kings of the Amorites, when He destroyed them along with their land.
4 And the Lord shall do unto them. He promises that, when they shall come into the land of Canaan, they shall be conquerors of all its nations: and this he confirms by experience; for, as God had delivered Sihon king of the Arnorites, and Og king of Bashan, into their hands, so also He would give them the same success in subduing their other enemies.
Moses could not cross Jordan himself, yet he would not abandon Israel without a word of encouragement. Though Joshua would lead them in battle, they would miss Moses interceding for them on the hill. But God had set His limit: his time to serve was finished, and he acquiesced, for what man should desire to live longer than God has work for him to do?
AI summary
Commenting on Deuteronomy 31:1-8
And the Lord shall give them up before your face,.... To ruin and destruction; the Targum of Jonathan is,"the Word of the Lord shall deliver them up:" that ye may do unto them according to all the commandments which I have commanded you; that is, utterly destroy them, make no covenant with them, enter into no alliances nor contract any marriages with them; but demolish...