2 Chronicles 30:21-23

30:21 The Israelites who were in Jerusalem observed the Feast of Unleavened Bread for seven days with great joy. The Levites and priests were praising the Lord every day with all their might. 30:22 Hezekiah expressed his appreciation to all the Levites, who demonstrated great skill in serving the Lord. They feasted for the seven days of the festival, and were making peace offerings and giving thanks to the Lord God of their ancestors.

30:23 The entire assembly then decided to celebrate for seven more days; so they joyfully celebrated for seven more days.