2 Chronicles 7:6
And the priests waited on their offices: the Levites also with instruments of musick of the LORD, which David the king had made to praise the LORD, because his mercy endureth for ever, when David praised by their ministry; and the priests sounded trumpets before them, and all Israel stood.
And the priests waited on their offices,.... Performed them, some in offering sacrifices, others in blowing trumpets, as it may be explained from the latter part of the verse:
the Levites also with instruments of music of the Lord, which David the king had made to praise the Lord; under a divine direction, on which the Levites played to the songs of praise offered to the Lord, and by which they made music sacred to him:
because his mercy endureth for ever; which, as it was the close of their songs of praise, was the cause of them:
when David praised by their ministry; the songs sung being composed by him, and the instruments they played upon being of his invention, and used by his order:
And the priests sounded trumpets before them; or rather over against them, that is, over against the Levites, as they were singing and playing on the instruments of music:
and all Israel stood; while this sacred and delightful service was performing, they both stood up, and stood by the priests and Levites, and joined with them in praising the Lord.