Nehemiah 9:1-3

On the twenty-fourth day of the same month the people of Israel gathered to fast in order to show sorrow for their sins. They had already separated themselves from all foreigners. They wore sackcloth and put dust on their heads as signs of grief. Then they stood and began to confess the sins that they and their ancestors had committed. For about three hours the Law of the LORD their God was read to them, and for the next three hours they confessed their sins and worshiped the LORD their God.