Deuteronomy 31:9

The Deposit of the Covenant Text

31:9 Then Moses wrote down this law and gave it to the Levitical priests, who carry the ark of the Lord’s covenant, and to all Israel’s elders.

Deuteronomy 31:19

31:19 Now write down for yourselves the following song and teach it to the Israelites. Put it into their very mouths so that this song may serve as my witness against the Israelites!