38,000

When David was old and full of years, he made his son Solomon king over Israel.

He also gathered together all the leaders of Israel, as well as the priests and Levites. The Levites thirty years old or more were counted, and the total number of men was thirty-eight thousand. David said, "Of these, twenty-four thousand are to supervise the work of the temple of Yahweh and six thousand are to be officials and judges. Four thousand are to be gatekeepers and four thousand are to praise Yahweh with the musical instruments I have provided for that purpose."

1 Chronicles 23: 1-5 NIV

All these men were under the supervision of their fathers for the music of the temple of Yahweh, with cymbals, lyres and harps, for the ministry at the house of God. Asaph, Jeduthun and Heman were under the supervision of the king. Along with their relatives - all of them trained and skilled in music for Yahweh - they numbered 288. Young and old alike, teacher as well as student, cast lots for their duties.

1 Chronicles 25:6-8 NIV

[Supervisors, judges, officials, courtyards, side rooms, purification of sacred things, bread, flour, mixing, measuring, thanking, praising, serving, prophesying, musicians, gatekeepers, guards, treasurers, young and old, teachers and students. Blessings, Lord on all who serve you!]