Deuteronomy 31:2-8

2And he said to them, “I am 1120 years old today; 2I am no longer able to 3go out and come in, and the Lord has told me, ‘4You shall not cross this Jordan.’ 35It is the Lord your God who is going to cross ahead of you; He Himself will destroy these nations before you, and you shall dispossess them. 6Joshua is the one who is going to cross ahead of you, just as the Lord has spoken. 4And the Lord will do to them just as He did to Sihon and Og, the kings of the Amorites, and to their land, when He destroyed them. 57The Lord will turn them over to you, and you will do to them in accordance with all the commandments which I have commanded you. 68Be strong and courageous, 9do not be afraid or in dread of them, for 10the Lord your God is the One who is going with you. 11He will not desert you or abandon you.”

7Then Moses called to Joshua and said to him in the sight of all Israel, “12Be strong and courageous, for you will go with this people into the land which the Lord has sworn to their fathers to give them, and you will give it to them as an inheritance. 8And 13the Lord is the one who is going ahead of you; He will be with you. 14He will not desert you or abandon you. Do not fear and do not be dismayed.”