Deuteronomy 31:19, 21, 26

“So write down the words of this song, and teach it to the people of Israel. Help them learn it, so it may serve as a witness for me against them.

And when great disasters come down on them, this song will stand as evidence against them, for it will never be forgotten by their descendants. I know the intentions of these people, even now before they have entered the land I swore to give them.”

“Take this Book of Instruction and place it beside the Ark of the Covenant of the LORD your God, so it may remain there as a witness against the people of Israel.