2 Chronicles 30:17-20

17For there were many in the assembly who had not consecrated themselves. Therefore the Levites had to slaughter the Passover lamb for everyone who was not clean, to consecrate it to the Lord.

18For a majority of the people, many of them from Ephraim, Manasseh, Issachar, and Zebulun, had not cleansed themselves, yet they ate the Passover otherwise than as prescribed. For Hezekiah had prayed for them, saying, "May the good Lord pardon everyone

19who sets his heart to seek God, the Lord, the God of his fathers, even though not according to the sanctuary's rules of cleanness."

20And the Lord heard Hezekiah and healed the people.