2 Chronicles 7:3, 6

When all the people of Israel saw how the fire came down and saw the glory and brilliance of the LORD upon the house, they bowed down on the stone pavement with their faces to the ground, and they worshiped and praised the LORD, saying, “For He is good, for His mercy and lovingkindness endure forever.”

The priests stood at their posts [ready for service], and the Levites also, with the musical instruments of the LORD which King David had made to praise the LORD, saying, “For His lovingkindness and mercy endure forever,” whenever David offered praise through their ministry. The priests were opposite the Levites blowing the trumpets and all Israel was standing.