1 Chronicles 23:2-6

NHEB(i) 2 And he gathered together all the leaders of Israel, with the priests and the Levites. 3 The Levites were numbered from thirty years old and upward: and their number by their polls, man by man, was thirty-eight thousand. 4 David said, "Of these, twenty-four thousand were to oversee the work of the house of the LORD; six thousand were officers and judges; 5 four thousand were doorkeepers; and four thousand praised the LORD with the instruments which I made, for giving praise." 6 David divided them into divisions according to the sons of Levi: Gershon, Kohath, and Merari.