311 When Moses had finished speaking all these words to all Israel, 2 he said to them: "I am now one hundred twenty years old. I am no longer able to get about, and the Lord has told me, "You shall not cross over this Jordan.' 3 The Lord your God himself will cross over before you. He will destroy these nations before you, and you shall dispossess them. Joshua also will cross over before you, as the Lord promised. 4 The Lord will do to them as he did to Sihon and Og, the kings of the Amorites, and to their land, when he destroyed them. 5 The Lord will give them over to you and you shall deal with them in full accord with the command that I have given to you. 6 Be strong and bold; have no fear or dread of them, because it is the Lord your God who goes with you; he will not fail you or forsake you."
Matthew Henry's Commentary on Deuteronomy 31:1-6
Commentary on Deuteronomy 31:1-8
(Read Deuteronomy 31:1-8)
Moses assures Israel of the constant presence of God with them. This is applied by the apostle to all God's spiritual Israel, to encourage their faith and hope; unto us is this gospel preached, as well as unto them; he will never fail thee, nor forsake thee, Hebrews 13:5. Moses commends Joshua to them for a leader; one whose wisdom, and courage, and affection they had long known; one whom God had appointed to be their leader; and therefore would own and bless. Joshua is well pleased to be admonished by Moses to be strong and of good courage. Those shall speed well, who have God with them; therefore they ought to be of good courage. Through God let us do valiantly, for through him we shall do victoriously; if we resist the devil, he will flee from us.