2 Chronicles 30:18-23

18Although most of the many people who came from Ephraim, Manasseh, Issachar and Zebulun had not purified themselves, yet they ate the Passover, contrary to what was written. But Hezekiah prayed for them, saying, “May the LORD, who is good, pardon everyone 19who sets their heart on seeking God—the LORD, the God of their ancestors—even if they are not clean according to the rules of the sanctuary.”

20And the LORD heard Hezekiah and healed the people.

21The Israelites who were present in Jerusalem celebrated the Festival of Unleavened Bread for seven days with great rejoicing, while the Levites and priests praised the LORD every day with resounding instruments dedicated to the LORD . Or priests sang to the Lord every day, accompanied by the Lord’s instruments of praise

22Hezekiah spoke encouragingly to all the Levites, who showed good understanding of the service of the LORD . For the seven days they ate their assigned portion and offered fellowship offerings and praised Or and confessed their sins to the LORD, the God of their ancestors. 23The whole assembly then agreed to celebrate the festival seven more days; so for another seven days they celebrated joyfully.