1 Chronicles 23:3-6

MSTC(i) 3 And the Levites were numbered from thirty years and above, and the tale of them in men, poll by poll, was thirty eight thousand. 4 Of which twenty four thousand were set to further the work of the house of the LORD. And six thousand were officers and judges. 5 Four thousand were porters and four thousand praised the LORD with such instruments as David had made to praise withal. 6 And David put an order among the children of Levi: Gershon, Kohath and Merari.