2 Chronicles 30:3

Context
30:3 They were unable to observe it at the regular ¹  time because not enough priests had consecrated themselves and the people had not assembled in Jerusalem.

2 Chronicles 30:15

Context

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 30:18-19

Context
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. ²  For Hezekiah prayed for them, saying: “May the Lord, who is good, forgive ³  30:19 everyone who has determined to follow God, ⁴  the Lord God of his ancestors, even if he is not ceremonially clean according to the standards of the temple.” ⁵