Moreover David and the captains of the host separated to the service 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 the workmen according to their service was:
David and the captains of the host - i:e., the princes (1 Chronicles 23:2; 1 Chronicles 24:6). It is probable that the king was attended on the occasion of arranging the singers by the same parties that are mentioned as having assisted him in regulating the order of the priests and Levites.
Who should prophesy with harps ... х hanib'iym (H5012), chanting, praising God with sacred songs (cf. 1 Samuel 10:5; 1 Samuel 10:11; 1 Samuel 19:20; Luke 1:67); Septuagint, tous apofthengomenous, uttering sounds.]