Deuteronomy 31:1-6 DBY

1 And Moses went and spoke these words to all Israel;
2 and he said unto them, I am a hundred and twenty years old this day, I can no more go out and come in; and Jehovah hath said unto me, Thou shalt not go over this Jordan.
3 Jehovah thy God, he will go over before thee, he will destroy these nations from before thee, that thou mayest take possession of them: Joshua, he shall go over before thee, as Jehovah hath said.
4 And Jehovah will do to them as he did to Sihon and to Og, the kings of the Amorites, and to their land; whom he destroyed.
5 And when Jehovah giveth them up before you, ye shall do to them according to all the commandment which I have commanded you.
6 Be strong and courageous, fear them not, neither be afraid of them; for Jehovah thy God, he it is that goeth with thee; he will not leave thee, nor forsake thee.