2 Chronicles 30:16

13 So a very great number of people came together at Jerusalem to keep the feast of unleavened bread in the second month.

14 And they got to work and took away all the altars in Jerusalem, and they put all the vessels for burning perfumes into the stream Kidron.

15 Then on the fourteenth day of the second month they put the Passover lambs to death: and the priests and the Levites were shamed, and made themselves holy and took burned offerings into the house of the Lord.

16 And they took their places in their right order, as it was ordered in the law of Moses, the man of God: the priests draining out on the altar the blood given them by the Levites.

17 For there were still a number of the people there who had not made themselves holy: so the Levites had to put Passover lambs to death for those who were not clean, to make them holy to the Lord.

18 For a great number of the people from Ephraim and Manasseh, Issachar and Zebulun, had not made themselves clean, but they took the Passover meal, though not in the right way. For Hezekiah had made prayer for them, saying, May the good Lord have mercy on everyone

19 Who, with all his heart, is turned to God the Lord, the God of his fathers, even if he has not been made clean after the rules of the holy place.