This chapter is based on Deuteronomy 31-34.
Moses was soon to die, and he was commanded to gather the children of Israel together before his death and relate to them all the journeyings of the Hebrew host since their departure from Egypt, and all the great transgressions of their fathers, which brought His judgments upon them, and compelled Him to say that they should not enter the Promised Land. Their fathers had died in the wilderness, according to the word of the Lord. Their children had grown up, and to them the promise was to be fulfilled of possessing the land of Canaan. Many of these were small children when the law was given, and they had no remembrance of the grandeur of the event. Others were born in the wilderness, and lest they should not realize the necessity of their obeying the Ten Commandments and all the laws and judgments given to Moses, he was instructed of God to recapitulate the Ten Commandments, and all the circumstances connected with the giving of the law. SR 170.1
Moses had written in a book all the laws and judgments given him of God, and had faithfully recorded all His instructions given them by the way, and all the miracles which He had performed for them, and all the murmurings of the children of Israel. Moses had also recorded his being overcome in consequence of their murmurings. SR 170.2