2 Chronicles 30:18 NIV

18 Although most of the many people who came from Ephraim, Manasseh, Issachar and Zebulun had not purified themselves,1 yet they ate the Passover, contrary to what was written. But Hezekiah prayed for them, saying, "May the LORD, who is good, pardon everyone

References for 2 Chronicles 30:18