Deuteronomy 31:7-8

31:7 Then 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. 31:8 The 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!”

Deuteronomy 31:28

31:28 Gather to me all your tribal elders and officials so I can speak to them directly about these things and call the heavens and the earth to witness against them.