Moreover, David and the captains of the host set apart for the service certain of the sons of Asaph, and of Heman, and of Jeduthun, who should prophesy with harps, with psalteries, and with cymbals: and the number of those who did the work according to their service was:
And all of these were under the hands of the fathers for song in the house of the LORD, with the cymbals, the psalteries, the harps, for the service of the house of God, according to the king's order to Asaph, and all. So the number of them, with their brethren that were instructed in the songs of the LORD, even all that were cunning, was two hundred and eighty-eight ( 1 Chronicles 25:6-7 ).