Deuteronomy 31:19, 21, 26
Deuteronomy 31:19 NKJV
“Now therefore, write down this song for yourselves, and teach it to the children of Israel; put it in their mouths, that this song may be a witness for Me against the children of Israel.
Deuteronomy 31:26 NKJV
“Take this Book of the Law, and put it beside the ark of the covenant of the LORD your God, that it may be there as a witness against you