1 Chronicles 23:3 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. MC VC

1 Chronicles 23:24 These were the sons of Levi after the house of their fathers; even the chief of the fathers, as they were counted by number of names by their polls, that did the work for the service of the house of the Lord, from the age of twenty years and upward. MC VC

1 Chronicles 23:27 For by the last words of David the Levites were numbered from twenty years old and above: MC VC

2 Chronicles 31:17 Both to the genealogy of the priests by the house of their fathers, and the Levites from twenty years old and upward, in their charges by their courses; MC VC