2 Chronicles 35 (résumé): Josiah celebrates the Passover

Now King Josiah celebrated the Passover on the 14th day of the 1st month, in the 18th year of his reign. He ordered the slaughter of the Passover lambs and the consecration of the people. Josiah gave 30,000 lambs and goats for the Passover offerings and 3,000 cattle. Officials also contributed to the Passover voluntarily with lambs and cattle. Then the Passover lambs were slaughtered and roasted, and the priests were sacrificing burnt offerings till nightfall, and the musicians and gatekeepers were in their rightful places. Following the Passover the Festival of Unleavened Bread was celebrated for 7 days. Never had there been a celebration of the Passover like this since the days of the prophet Samuel and no other king had celebrated the Passover than had done King Josiah. 

So after Josiah had completely set the temple in order King Necho of Egypt came to battle with Josiah, and in the stand-off which ensued Josiah was killed and he was buried in Jerusalem. Jeremiah composed laments for Josiah and many laments were sung.