Nehemiah 9:1-3

Then on the 24th day of that same month, the Israelites gathered together for a day of fasting. They wore sackcloth and put ashes on their heads to show they were sad and upset. Those people who were true Israelites separated themselves from foreigners. The Israelites stood and confessed their sins and the sins of their ancestors. They stood there for about three hours, and the people read the Book of the Law of the LORD their God. Then for three more hours they confessed their sins and bowed down to worship the their God. Then for three more hours they confessed their sins and bowed down to worship the LORD their God.