2 Chronicles 29:25-30

And he set the Levites in the house of Jehovah with cymbals, with psalteries, and with harps, according to the commandment of David, and of Gad the king’s seer, and Nathan the prophet; for the commandment was of Jehovah by his prophets. And the Levites stood with the instruments of David, and the priests with the trumpets. And Hezekiah commanded to offer the burnt-offering upon the altar. And when the burnt-offering began, the song of Jehovah began also, and the trumpets, together with the instruments of David king of Israel. And all the assembly worshipped, and the singers sang, and the trumpeters sounded; all this continued until the burnt-offering was finished. And when they had made an end of offering, the king and all that were present with him bowed themselves and worshipped. Moreover Hezekiah the king and the princes commanded the Levites to sing praises unto Jehovah with the words of David, and of Asaph the seer. And they sang praises with gladness, and they bowed their heads and worshipped.