1 Chronicles 23:26-28

New International Version

²⁶ the Levites no longer need to carry the tabernacle or any of the articles used in its service.”^{(A) 27} According to the last instructions of David, the Levites were counted from those twenty years old or more.

²⁸ The duty of the Levites was to help Aaron’s descendants in the service of the temple of the Lord: to be in charge of the courtyards, the side rooms, the purification^(B) of all sacred things and the performance of other duties at the house of God.