Deuteronomy 31:4

4 Yahweh will do to them as he did to Sihon and to Og, the kings of the Amorites, and to their land; whom he destroyed.

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 to them, I am one hundred twenty years old this day; I can no more go out and come in: and Yahweh has said to me, You shall not go over this Jordan.

3 Yahweh your God, he will go over before you; he will destroy these nations from before you, and you shall dispossess them: [and] Joshua, he shall go over before you, as Yahweh has spoken.

4 Yahweh will do to them as he did to Sihon and to Og, the kings of the Amorites, and to their land; whom he destroyed.

5 Yahweh will deliver them up before you, and you shall do to them according to all the commandment which I have commanded you.

6 Be strong and of good courage, don't be afraid, nor be scared of them: for Yahweh your God, he it is who does go with you; he will not fail you, nor forsake you.