1 Chronicles 23:2-4

King James Version

² And he gathered together all the princes of Israel, with the priests and the Levites.

³ Now the Levites were numbered from the age of thirty years and upward: and their number by their polls, man by man, was thirty and eight thousand.

⁴ Of which, twenty and four thousand were to set forward the work of the house of the Lord; and six thousand were officers and judges: