Deuteronomy 31:4

4 "The LORD will do to them just as He did to Sihon and Og, the kings of the Amorites, and to their land, when He destroyed them.

Deuteronomy 31:4 Meaning and Commentary

Deuteronomy 31:4

And the Lord shall do unto them as he did unto Sihon, and to
Og, kings of the Amorites
Deliver them up into their hands; see the history of this in ( Numbers 21:10-35 ) ;

and unto the land of them whom he destroyed;
put them into the possession of the land of Canaan, as they were now in possession of the land of those two kings he destroyed by them. This instance is given to encourage their faith, assuring them that what had been done to them would be done to the Canaanitish kings, and their subjects, and their lands.

Deuteronomy 31:4 In-Context

2 And he said to them, "I am a hundred and twenty years old today; I am no longer able to come and go, and the LORD has said to me, 'You shall not cross this Jordan.'

3 "It is the LORD your God who will cross ahead of you; He will destroy these nations before you, and you shall dispossess them. Joshua is the one who will cross ahead of you, just as the LORD has spoken.

4 "The LORD will do to them just as He did to Sihon and Og, the kings of the Amorites, and to their land, when He destroyed them.

5 "The LORD will deliver them up before you, and you shall do to them according to all the commandments which I have commanded you.

6 "Be strong and courageous, do not be afraid or tremble at them, for the LORD your God is the one who goes with you. He will not fail you or forsake you."