Deuteronomy 31:2-8

2He said to them, “Today I am a hundred and twenty years old. I am no longer able to get about, and the Lord has said to me, ‘You will not cross the Jordan.’

3As for the Lord your God, he is about to cross over before you; he will destroy these nations before you and dispossess them. As for Joshua, he is about to cross before you just as the Lord has said.

4The Lord will do to them just what he did to Sihon and Og, the Amorite kings, and to their land, which he destroyed.

5The Lord will deliver them over to you and you will do to them according to the whole commandment I have given you.

6Be strong and courageous! Do not fear or tremble before them, for the Lord your God is the one who is going with you. He will not fail you or abandon you!”

7Then Moses called out to Joshua in the presence of all Israel, “Be strong and courageous, for you will accompany these people to the land that the Lord promised to give their ancestors, and you will enable them to inherit it.

8The Lord is indeed going before you – he will be with you; he will not fail you or abandon you. Do not be afraid or discouraged!”