Deuteronomy 31:9-11

Then Moses wrote this law and gave it to the priests, the sons of Levi, who carried the ark of the covenant of the LORD, and to all the elders of Israel. And Moses commanded them, “At the end of every seven years, at the set time in the year of release, at the Feast of Booths, when all Israel comes to appear before the LORD your God at the place that he will choose, you shall read this law before all Israel in their hearing.