Deuteronomy 31:9-11

So Moses wrote this law and delivered it to the priests, the sons of Levi, who bore the ark of the covenant of the LORD, and to all the elders of Israel. And Moses commanded them, saying: “At the end of every seven years, at the appointed time in the year of release, at the Feast of Tabernacles, when all Israel comes to appear before the LORD your God in the place which He chooses, you shall read this law before all Israel in their hearing.