Deuteronomy 31:4

4 “The LORD will destroy the nations living in the land, just as he destroyed Sihon and Og, the kings of the Amorites.

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 he said, “I am now 120 years old, and I am no longer able to lead you. The LORD has told me, ‘You will not cross the Jordan River.’

3 But the LORD your God himself will cross over ahead of you. He will destroy the nations living there, and you will take possession of their land. Joshua will lead you across the river, just as the LORD promised.

4 “The LORD will destroy the nations living in the land, just as he destroyed Sihon and Og, the kings of the Amorites.

5 The LORD will hand over to you the people who live there, and you must deal with them as I have commanded you.

6 So be strong and courageous! Do not be afraid and do not panic before them. For the LORD your God will personally go ahead of you. He will neither fail you nor abandon you.”