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:
      II. This is here called a service, and the persons employed in it workmen,1 Chronicles 25:1; 1 Chronicles 25:1. Not but that it is the greatest liberty and pleasure to be employed in praising God: what is heaven but that? But it intimates that it is our duty to make a business of it, and stir up all that is within us to it; and that, in our present state of corruption and infirmity, it will not be done as it should be done without labour and struggle. We must take pains with our hearts to bring them, and keep them, to this work, and to engage all that is within us.