2 Chronicles 29:26

24Then the priests killed them, and they made a sin offering with their blood on the altar, to make atonement for all Israel; for the king commanded that the burnt offering and the sin offering should be made for all Israel.

25He set the Levites in the LORD’s house with cymbals, with stringed instruments, and with harps, according to the commandment of David, of Gad the king’s seer, and Nathan the prophet; for the commandment was from the LORD by his prophets.

26The Levites stood with David’s instruments, and the priests with the trumpets.

27Hezekiah commanded them to offer the burnt offering on the altar. When the burnt offering began, the LORD’s song also began, along with the trumpets and instruments of David king of Israel.

28All the assembly worshiped, the singers sang, and the trumpeters sounded. All this continued until the burnt offering was finished.