2 Chronicles 35:15-16

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 {waited} at every gate; they might not depart from their service; for their brethren the Levites prepared for them. {place: Heb. station} So all the service of the LORD was prepared the same day, to keep the passover, and to offer burnt offerings upon the altar of the LORD, according to the commandment of king Josiah.