Deuteronomy 7:17,18
If you shall say in your heart, These nations are more than I; how can I dispossess them?
Torrey's Topical Textbook—AKJV

Deuteronomy 31:7
And Moses called to Joshua, and said to him in the sight of all Israel, Be strong and of a good courage: for you must go with this people to the land which the LORD has sworn to their fathers to give them; and you shall cause them to inherit it.
Torrey's Topical Textbook—AKJV