What does 2 Chronicles 35:18 mean?

There hadn’t been a Passover like this in Israel since the days of the prophet Samuel. None of the kings of Israel had ever celebrated a Passover like Josiah did, with the priests, Levites, all of Judah and Israel, and everyone from Jerusalem. 2 Chronicles 35:18 - Modern Text Bible

(This Passover stands out as the most faithful and complete celebration since ancient times. Josiah’s leadership brings everyone together in a way that hadn’t happened for generations.)