1 Chronicles 23:4 YLT

²  and gathereth all the heads of Israel, and the priests, and the Levites;

³  and the Levites are numbered from a son of thirty years and upward, and their number, by their polls, is of mighty men thirty and eight thousand.

⁴  Of these to preside over the work of the house of Jehovah 'are' twenty and four thousand, and officers and judges six thousand,

⁵  and four thousand gatekeepers, and four thousand giving praise to Jehovah, 'with instruments that I made for praising,' 'saith David.'

⁶  And David distributeth them into courses: Of the sons of Levi: of Gershon, Kohath, and Merari.