II Chronicles 30:15-27

Then they slaughtered the Passover lambs on the fourteenth day of the second month. The priests and the Levites were ashamed, and sanctified themselves, and brought the burnt offerings to the house of the LORD. They stood in their place according to their custom, according to the Law of Moses the man of God; the priests sprinkled the blood received from the hand of the Levites. For there were many in the assembly who had not sanctified themselves; therefore the Levites had charge of the slaughter of the Passover lambs for everyone who was not clean, to sanctify them to the LORD. For a multitude of the people, many from Ephraim, Manasseh, Issachar, and Zebulun, had not cleansed themselves, yet they ate the Passover contrary to what was written. But Hezekiah prayed for them, saying, “May the good LORD provide atonement for everyone who prepares his heart to seek God, the LORD God of his fathers, though he is not cleansed according to the purification of the sanctuary.” And the LORD listened to Hezekiah and healed the people. So the children of Israel who were present at Jerusalem kept the Feast of Unleavened Bread seven days with great gladness; and the Levites and the priests praised the LORD day by day, singing to the LORD, accompanied by loud instruments. And Hezekiah gave encouragement to all the Levites who taught the good knowledge of the LORD; and they ate throughout the feast seven days, offering peace offerings and making confession to the LORD God of their fathers. Then the whole assembly agreed to keep the feast another seven days, and they kept it another seven days with gladness. For Hezekiah king of Judah gave to the assembly a thousand bulls and seven thousand sheep, and the leaders gave to the assembly a thousand bulls and ten thousand sheep; and a great number of priests sanctified themselves. The whole assembly of Judah rejoiced, also the priests and Levites, all the assembly that came from Israel, the sojourners who came from the land of Israel, and those who dwelt in Judah. So there was great joy in Jerusalem, for since the time of Solomon the son of David, king of Israel, there had been nothing like this in Jerusalem. Then the priests, the Levites, arose and blessed the people, and their voice was heard; and their prayer came up to His holy dwelling place, to heaven.