Deuteronomy 31:19; Deuteronomy 31:26

19 Now therefore write mthis song and nteach it to the people of Israel. Put it in their mouths, that this song may be oa witness for me against the people of Israel.

26 Take this Book of the Law aand put it by the side of the ark of the covenant of the Lord your God, that it may be there for ba witness against you.