Deuteronomy 21:5

21:5 Then the Levitical priests will approach (for the Lord your God has chosen them to serve him and to pronounce blessings in his name, and to decide every judicial verdict)

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.