Deuteronomy 31:1-6

1 And Moses went and spoke these words to all Israel.

2 And he said to them, I am an hundred and twenty years old this day; I can no more go out and come in: also the LORD has said to me, You shall not go over this Jordan.

3 The LORD your God, he will go over before you, and he will destroy these nations from before you, and you shall possess them: and Joshua, he shall go over before you, as the LORD has said.

4 And the LORD shall do to them as he did to Sihon and to Og, kings of the Amorites, and to the land of them, whom he destroyed.

5 And the LORD shall give them up before your face, that you may do to them according to all the commandments which I have commanded you.

6 Be strong and of a good courage, fear not, nor be afraid of them: for the LORD your God, he it is that does go with you; he will not fail you, nor forsake you.