1 Chronicles 23:24
24 tThese were the sons of Levi by their fathers’ houses, the heads of fathers’ houses uas they were listed according to the number of the names of the individuals from vtwenty years old and upward who were to do the work for the service of the house of the Lord.
1 Chronicles 23:27
27 For by the last words of David the sons of Levi were numbered from vtwenty years old and upward.