Deuteronomy 31:3-6

MSB(i) 3 The LORD your God Himself will cross over ahead of you. He will destroy these nations before you, and you will dispossess them. Joshua will cross ahead of you, as the LORD has said. 4 And the LORD will do to them as He did to Sihon and Og, the kings of the Amorites, when He destroyed them along with their land. 5 The LORD will deliver them over to you, and you must do to them exactly as I have commanded you. 6 Be strong and courageous; do not be afraid or terrified of them, for it is the LORD your God who goes with you; He will never leave you nor forsake you.”