Deuteronomy 3:20-22

Amplified Bible, Classic Edition

²⁰ Until the Lord has given rest to your brethren as to you, and until they also possess the land which the Lord your God has given them beyond the Jordan. Then shall you return every man to the possession which I have given you.

²¹ And I commanded Joshua at that time, saying, Your own eyes have seen all that the Lord your God has done to these two kings [Sihon and Og]; so shall the Lord do to all the kingdoms into which you are going over [the Jordan].

²² You shall not fear them, for the Lord your God shall fight for you.