2 Chronicles 29:24-28

The priests slaughtered them and purified the altar with their blood to atone for all Israel, because the king ordered the burnt offering and the sin offering for all Israel.

He then stationed the Levites in the house of the Lord with cymbals, harps, and lyres, according to the command of David and of Gad, the king’s seer, and of Nathan the prophet; for the command was from the Lord through His prophets.

The Levites stood with the musical instruments of David, and the priests with the trumpets.

Then Hezekiah gave the order to offer the burnt offering on the altar. When the burnt offering began, the song to the Lord also began with the trumpets, accompanied by the instruments of David, king of Israel.

While the whole assembly worshiped, the singers also sang and the trumpets sounded; all this continued until the burnt offering was finished.