Bible Verses About Trumpet: Used at the dedication of Solomon's temple

Both the Levites and the singing men, that is, both they that were under Asaph, and they that were under Heman, and they that were under Idithun, with their sons, and their brethren, clothed with fine linen, sounded with cymbals, and psalteries, and harps, standing on the east side of the altar, and with them a hundred and twenty priests, sounding with trumpets.

So when they all sounded together, both with trumpets, and voice, and cymbals, and organs, and with divers kind of musical instruments, and lifted up their voice on high: the sound was heard afar off, so that when they began to praise the Lord, and to say: Give glory to the Lord for he is good, for his mercy endureth for ever: the house of God was filled with a cloud.

And the priests stood in their offices: and the Levites with the instruments of music of the Lord, which king David made to praise the Lord: because his mercy endureth for ever, singing the hymns of David by their ministry: and the priests sounded with trumpets before them, and all Israel stood.