Deuteronomy 31:21; Deuteronomy 31:26

21 And when many evils and troubles have come upon them, this song shall confront them as ta witness (for it will live unforgotten in the mouths of their offspring). For uI know what they are inclined to do even today, before I have brought them into the land that I swore to give.

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.