Deuteronomy 31:4-6

And the LORD will do to them what he did to Sihon and Og, the kings of the Amorites, whom he destroyed along with their land. The LORD will deliver them to you, and you must do to them all that I have commanded you. Be strong and courageous. Do not be afraid or terrified because of them, for the LORD your God goes with you; he will never leave you nor forsake you.”