25:1 Moreover David and the captains of the host a 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:
(a) The singers were divided into 24 courses, so that every course or order contained twelve, and in all there were 288, as in ( 1 Chronicles 25:7 ). 25:3 Of Jeduthun: the sons of Jeduthun; Gedaliah, and Zeri, and Jeshaiah, Hashabiah, and Mattithiah, b six, under the hands of their father Jeduthun, who c prophesied with a harp, to give thanks and to praise the LORD.
(b) Of which one is not here numbered. 25:8 And they cast lots, d ward against [ward], as well the e small as the great, the teacher as the scholar.
(c) Meaning, psalms and songs to praise God.
(d) Who should be in every company and course. 25:9 Now the first lot came forth for Asaph to f Joseph: the second to Gedaliah, who with his brethren and sons [were] twelve:
(e) Without respect to age or cunning.
(f) So that he served in the first turn and the rest every one as his turn followed in order.