2 Chronicles 35:16-19

16So all the service of the Lord was established that day for observing the Passover and for offering burnt offerings on the altar of the Lord, according to the command of King Josiah.

17The Israelites who were present in Judah also observed the Passover at that time and the Festival of Unleavened Bread for seven days.

18No Passover had been observed like it in Israel since the days of the prophet Samuel. None of the kings of Israel ever observed a Passover like the one that Josiah observed with the priests, the Levites, all Judah, the Israelites who were present in Judah, and the inhabitants of Jerusalem.

19In the eighteenth year of Josiah’s reign, this Passover was observed.