Census and Classification of the Levites

1 Chronicles 23:3-5

The Levites were numbered from thirty years old and upward: and their number by their polls, man by man, was thirty-eight thousand.

David said, “Of these, twenty-four thousand were to oversee the work of the LORD’s house; six thousand were officers and judges;

four thousand were doorkeepers; and four thousand praised the LORD with the instruments which I made, for giving praise.”