2 Chronicles 30:21-23

The Israelites in Jerusalem celebrated the Feast of Unleavened Bread for seven days with great joy to the LORD. The Levites and priests praised the LORD every day with loud music. Hezekiah encouraged all the Levites who showed they understood well how to do their service for the LORD. The people ate the feast for seven days, offered fellowship offerings, and praised the LORD, the God of their ancestors. Then all the people agreed to stay seven more days, so they celebrated with joy for seven more days.