1 Chronicles 23:26

²⁴These are the sons of Levi according to the houses of their fathers; chiefs of their families according to their numbering, according to the number of their names, according to their polls, doing the works of service of the house of the Lord, from twenty years old and upward.

²⁵For David said, The Lord God of Israel has given rest to his people, and has taken up his abode in Jerusalem forever.

— 1 Chronicles 23:26 —

²⁷For by the last words of David was the number of the Levites taken from twenty years old and upward.

²⁸For he appointed them to wait on Aaron, to minister in the house of the Lord, over the courts, and over the chambers, and over the purification of all the holy things, and over the works of the service of the house of God;