1 Chronicles 23:32

23:32 They were in charge of the meeting tent and the holy place, and helped their relatives, the descendants of Aaron, in the service of the Lord’s temple.

1 Chronicles 24:19

24:19 This was the order in which they carried out their assigned responsibilities when they entered the Lord’s temple, according to the regulations given them by their ancestor Aaron, just as the Lord God of Israel had instructed him.