2 Chronicles 30:13-20

13A very large crowd of people assembled in Jerusalem to celebrate the Festival of Unleavened Bread in the second month. 14They removed the altars in Jerusalem and cleared away the incense altars and threw them into the Kidron Valley. 15They slaughtered the Passover lamb on the fourteenth day of the second month. The priests and the Levites were ashamed and consecrated themselves and brought burnt offerings to the temple of the Lord. 16Then they took up their regular positions as prescribed in the Law of Moses the man of God. The priests splashed against the altar the blood handed to them by the Levites. 17Since many in the crowd had not consecrated themselves, the Levites had to kill the Passover lambs for all those who were not ceremonially clean and could not consecrate their lambs to the Lord. 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.