2 Chronicles 29:25
King James Version
“And he set the Levites in the house of the LORD 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 of the LORD by his prophets.”
Context
22So they killed the bullocks, and the priests received the blood, and sprinkled on the altar: likewise, when they had killed the rams, they sprinkled the blood upon the altar: they killed also the lambs, and they sprinkled the blood upon the altar.
23And they brought forth the he goats the sin offering before the king and the congregation; and they laid their hands upon them:
24And the priests killed them, and they made reconciliation with their blood upon the altar, to make an atonement for all Israel: for the king commanded the burnt offering and the sin offering for all Israel.
25And he set the Levites in the house of the LORD 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 of the LORD by his prophets.
26And the Levites stood with the instruments of David, and the priests with the trumpets.
27And Hezekiah commanded to offer the burnt offering upon the altar. And when the burnt offering began, the song of the LORD began with the trumpets, and with the instruments by David king of Israel.
28And all the congregation worshipped, and the singers sang, and the trumpeters sounded: all until the burnt offering was finished.