Deuteronomy 31:3-5

3Adonai your God—He will cross over before you. He will destroy these nations from before you, and you will dispossess them. Joshua will cross over before you, just as Adonai has promised.

4“Adonai 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.

5Adonai will give them over to you, and you are to do to them according to all the mitzvot that I commanded you.