The LORD your God himself will go over before you. He will destroy these nations before you, so that you shall dispossess them, and Joshua will go over at your head, as the LORD has spoken.
3 The Lord thy God, he will go over. By no ordinary consolation does he encourage their minds to renewed alacrity, because they should experience, even when he was dead, the unceasing favor of God. Hence we gather a lesson of especial usefulness, that whenever God raises up to us men endowed with excellent gifts, He is wont so to make use of their labors...
Loth to part (we say) bids oft farewell. Moses does so to the children of Israel: not because he was loth to go to God, but because he was loth to leave them, fearing that when he had left them they would leave God.
Commenting on Deuteronomy 31:1-8
And the Lord shall do unto them as he did unto Sihon, and to Og, kings of the Amorites,.... Deliver them up into their hands; see the history of this in Num 21:10, and unto the land of them whom he destroyed; put them into the possession of the land of Canaan, as they were now in possession of the land of those two kings he destroyed by them.