2 Chronicles 30:16

13 And there assembled at Jerusalem many people to keep the feast of unleavened bread in the second month, a very great congregation.

14 And they arose and took away the altars that [were] in Jerusalem, and all the altars for incense they took away, and cast [them] into the brook Kidron.

15 Then they killed the passover on the fourteenth [day] of the second month: and the priests and the Levites were ashamed, and sanctified themselves, and brought in the burnt-offerings into the house of the LORD.

16 And they stood in their place after their manner, according to the law of Moses the man of God: the priests sprinkled the blood, [which they received] from the hand of the Levites.

17 For [there were] many in the congregation that were not sanctified: therefore the Levites had the charge of the killing of the passovers for every one [that was] not clean, to sanctify [them] to the LORD.

18 For a multitude of the people, [even] many of Ephraim, and Manasseh, Issachar, and Zebulun, had not cleansed themselves, yet they ate the passover otherwise than it was written. But Hezekiah prayed for them, saying, The good LORD pardon every one,

19 [That] prepareth his heart to seek God, the LORD God of his fathers, though [he is] not [cleansed] according to the purification of the sanctuary.