Then Moses came with Joshua son of Nun and recited all the words of this song in the hearing of the people.
Deuteronomy 32:44. And Moses came and spake. It is not without reason that Moses again records that he repeated this Song before the people; because it thence appears how far from all ambition he was, in that he did not fear, at the very close of his life, to irritate all their minds, so as to render the memory of his name hateful; and besides...
Here is, I. The solemn delivery of this song to the children of Israel, Deu 32:44, Deu 32:45. Moses spoke it to as many as could hear him, while Joshua, in another assembly, at the same time, delivered it to as many as his voice would reach.
Commenting on Deuteronomy 32:44-52
And Moses made an end of speaking all these words to all Israel. Finished all he had to say to them from the Lord, whether by way of precept, moral, civil, and ceremonial or in the form of a song. And Moses made an end of speaking all these words to all Israel.