2 Kings 23:22
Surely there was not holden such a passover from the days of the judges that judged Israel, nor in all the days of the kings of Israel, nor of the kings of Judah;
Cross-reference
2 Chronicles 35:3–17
Parallel
2 Chronicles 35:3-17 gives the full account of Josiah's Passover, providing the details behind this claim.
2 Chronicles 35:18
Parallel
2 Chronicles 35:18 echoes the same claim: no Passover like Josiah's had been kept since Samuel's time—parallel testimony.
2 Chronicles 35:19
Parallel
2 Chronicles 35:19 records the same unique Passover, confirming Josiah's reform was unprecedented since the judges.