Deuteronomy 31:22

Moses wrote down this song: This statement supports the traditional view that Moses wrote the book of Deuteronomy (see Deuteronomy Book Introduction, “Authorship”).

In the future, when the community sings this song, it will remind them of God's past faithfulness and their frequent disloyalty (32:1–43). The song includes major blessings for obedience and curses for disobedience. The people of Israel will sing it to show they accept these promises and warnings. Through music, they will remember God's blessings for obedience and call for God's judgment if they are unfaithful.

For a covenant document to remain binding and important, it had to be kept in a place where both sides could easily find it.

The book of Deuteronomy needed to be preserved for future generations. In this way, Israel would continue to remember to submit to the Lord’s rule.