23:28 Their job was to help Aaron’s descendants in the service of the Lord’s temple. They were to take care of the courtyards, the rooms, ceremonial purification of all holy items, and other jobs related to the service of God’s temple.
1 Chronicles 23:2
23:2 David assembled all the leaders of Israel, along with the priests and the Levites.
1 Chronicles 23:6
23:6 David divided them into groups corresponding to the sons of Levi: Gershon, Kohath, and Merari.