Deuteronomy 31:1

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, and thou shalt dispossess them: [and] Joshua, he shall go over before thee, as Jehovah hath spoken.

4 And Jehovah will do unto them as he did to Sihon and to Og, the kings of the Amorites, and unto their land; whom he destroyed.

5 And Jehovah will deliver them up before you, and ye shall do unto them according unto all the commandment which I have commanded you.

6 Be strong and of good courage, fear not, nor be affrighted at them: for Jehovah thy God, he it is that doth go with thee; he will not fail thee, nor forsake thee.

7 And Moses called unto Joshua, and said unto him in the sight of all Israel, Be strong and of good courage: for thou shalt go with this people into the land which Jehovah hath sworn unto their fathers to give them; and thou shalt cause them to inherit it.