1 Chronicles 25:1

1 Therefore David, and the magistrates of the host, separated to the service of the sons of Asaph, and of Heman, and of Jeduthun, the which should prophesy in harps, and in psalteries, and in cymbals, by their number, and serve the office hallowed, or enjoined, to them. (And so David, and his officers/and his leaders, set apart for service the sons of Asaph, and of Heman, and of Jeduthun, who would prophesy to the accompaniment of harps, and lutes, and cymbals, by their number, and so do the work assigned to them.)

1 Chronicles 25:1 Meaning and Commentary

1 Chronicles 25:1

Moreover, David and the captains of the host separated to
the service
Of singing the praises of God; this was done by the princes of the people, and the chief of the priests, who were gathered together, and before whom the lots were cast, both for priests and Levites, and now here for the singers, see ( 1 Chronicles 22:2 ) ( 24:6 ) and those that were separated were

of the sons of Asaph, and of Heman, and of Jeduthun;
or Ethan, the three precentors, or chief of the singers:

who should prophesy with harps, with psalteries, and with cymbals;
sing psalms, hymns, and spiritual songs, endited by the Holy Spirit of God; which contained in them prophecies concerning things to come, particularly relating to the Messiah, of which there are many in the book of Psalms; and to the tunes of these they played on the above instruments of music:

and the number of the workmen, according to their service, was;
as follows.

1 Chronicles 25:1 In-Context

1 Therefore David, and the magistrates of the host, separated to the service of the sons of Asaph, and of Heman, and of Jeduthun, the which should prophesy in harps, and in psalteries, and in cymbals, by their number, and serve the office hallowed, or enjoined, to them. (And so David, and his officers/and his leaders, set apart for service the sons of Asaph, and of Heman, and of Jeduthun, who would prophesy to the accompaniment of harps, and lutes, and cymbals, by their number, and so do the work assigned to them.)

2 Of the sons of Asaph; Zaccur, and Joseph, and Nethaniah, and Asarelah; and the sons of Asaph, under the hand of Asaph, prophesied beside the king (prophesied by order of the king).

3 And the sons of Jeduthun were these; Gedaliah, Zeri, Jeshaiah, (Shimei,) and Hashabiah, and Mattithiah, six; under the hand of their father Jeduthun, that prophesied in an harp, upon men acknowledging and praising the Lord (who prophesied to the accompaniment of a harp, giving thanks, and praising the Lord).

4 Also the sons of Heman were (these of) Heman; Bukkiah, Mattaniah, Uzziel, Shebuel, and Jerimoth, Hananiah, Hanani, Eliathah, Giddalti, and Romamtiezer, and Joshbekashah, Mallothi, Hothir, and Mahazioth;

5 all these the sons of Heman were prophets of the king in the words of God, that he should enhance the horn, or strength. And God gave to Heman fourteen sons and three daughters. (all these were the sons of Heman, the prophet of the king, by the promises of God, to lift up his horn, or his strength. And God gave Heman fourteen sons and three daughters.)