2 Chronicles 35:16-19

16So all the preparations for the Lord’s service were made that day, as the Passover was observed and the burnt sacrifices were offered on the altar of the Lord, as prescribed by King Josiah.

17So the Israelites who were present observed the Passover at that time, as well as the Feast of Unleavened Bread for seven days.

18A Passover like this had not been observed in Israel since the days of Samuel the prophet. None of the kings of Israel had observed a Passover like the one celebrated by Josiah, the priests, the Levites, all the people of Judah and Israel who were there, and the residents of Jerusalem.

19This Passover was observed in the eighteenth year of Josiah’s reign.