2 Chronicles 30:17-20

17For there were many in the congregation that were not hallowed; therefore the Levites had the charge of the slaughtering of the passover-lambs for every one not clean, to hallow them unto Jehovah.

18For a multitude of the people, many of Ephraim and Manasseh, Issachar and Zebulun, had not cleansed themselves, and they ate the passover otherwise than it was written. But Hezekiah prayed for them saying, Jehovah, who is good, forgive every one

19that has directed his heart to seek 1God, Jehovah the 2God of his fathers, although not according to the purification of the sanctuary.

20And Jehovah hearkened to Hezekiah, and healed the people.