2 Chronicles 35:17

14 Afterward, they made preparations for themselves and for the priests, since the priests, the descendants of Aaron, were offering up burnt offerings and fat until nightfall. So the Levites made preparations for themselves and for the priests, the descendants of Aaron.

15 The singers, the descendants of Asaph, were at their stations according to the command of David, Asaph, Heman, and Jeduthun the king’s seer. And the gatekeepers at each gate did not need to leave their position, because their fellow Levites made preparations for them.

16 So on that day the entire service of the LORD was carried out for celebrating the Passover and offering burnt offerings on the altar of the LORD, according to the command of King Josiah.

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

18 No such Passover had been observed in Israel since the days of Samuel the prophet. 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, and the people of Jerusalem.

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

20 After all this, when Josiah had set the temple in order, Neco king of Egypt marched up to fight at Carchemish by the Euphrates, and Josiah went out to confront him.