2 Chronicles 30:15

30:15 They slaughtered the Passover lamb on the fourteenth day of the second month. The priests and Levites were ashamed, so they consecrated themselves and brought burnt sacrifices to the Lord’s temple.

2 Chronicles 30:17-20

30:17 Because many in the assembly had not consecrated themselves, the Levites slaughtered the Passover lambs of all who were ceremonially unclean and could not consecrate their sacrifice to the Lord. 30:18 The majority of the many people from Ephraim, Manasseh, Issachar, and Zebulun were ceremonially unclean, yet they ate the Passover in violation of what is prescribed in the law. For Hezekiah prayed for them, saying: “May the Lord, who is good, forgive 30:19 everyone who has determined to follow God, the Lord God of his ancestors, even if he is not ceremonially clean according to the standards of the temple.” 30:20 The Lord responded favorably to Hezekiah and forgave the people.