When the Torah mentions that Moses wrote things down, the purpose is three-fold: First, the purpose is to remember and retell the story about how God rescues his covenant people (Exodus 17:8-9, 14). Second, Scripture becomes the terms of the partnership between God and Israel, much like marriage vows (Exodus 24:3-4). Third, it functions as a story of the people’s failure and God’s plan to raise up a prophet to come (Deuteronomy 31:19-26).
The bible project.