Thematic Bible: Divided them into four classes

Of these, 24,000 were to oversee the work of the house of the LORD; and 6,000 were officers and judges, and 4,000 were gatekeepers, and 4,000 were praising the LORD with the instruments which David made for giving praise. David divided them into divisions according to the sons of Levi: Gershon, Kohath, and Merari.