2 Chronicles 29:12-17, 27-30

The Levites stood at attention: Mahath son of Amasai and Joel son of Azariah from the Kohathites; Kish son of Abdi and Azariah son of Jehallelel from the Merarites; Joah son of Zimmah and Eden son of Joah from the Gershonites; Shimri and Jeiel sons of Elizaphan; Zechariah and Mattaniah sons of Asaph; Jehiel and Shimei of the family of Heman; Shemaiah and Uzziel of the family of Jeduthun. They presented themselves and their brothers, consecrated themselves, and set to work cleaning up The Temple of GOD as the king had directed—as GOD directed! The priests started from the inside and worked out; they emptied the place of the accumulation of defiling junk—pagan rubbish that had no business in that holy place—and the Levites hauled it off to the Kidron Valley. They began the Temple cleaning on the first day of the first month and by the eighth day they had worked their way out to the porch—eight days it took them to clean and consecrate The Temple itself, and in eight more days they had finished with the entire Temple complex.

Then Hezekiah gave the signal to begin: The Whole-Burnt-Offering was offered on the Altar; at the same time the sacred choir began singing, backed up by the trumpets and the David orchestra while the entire congregation worshiped. The singers sang and the trumpeters played all during the sacrifice of the Whole-Burnt-Offering. When the offering of the sacrifice was completed, the king and everyone there knelt to the ground and worshiped. Then Hezekiah the king and the leaders told the Levites to finish things off with anthems of praise to GOD using lyrics by David and Asaph the seer. They sang their praises with joy and reverence, kneeling in worship.