II Chronicles 30:18-20

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.