2 Chronicles 35:15-17

American Standard Version

¹⁵ And the singers the sons of Asaph were in their place, according to the commandment of David, and Asaph, and Heman, and Jeduthun the king’s seer; and the porters were at every gate: they needed not to depart from their service; for their brethren the Levites prepared for them.

¹⁶ So all the service of Jehovah was prepared the same day, to keep the passover, and to offer burnt-offerings upon the altar of Jehovah, according to the commandment of king Josiah. ¹⁷ And the children of Israel that were present kept the passover at that time, and the feast of unleavened bread seven days.