TSK · 2 Chronicles 23:4

Their relatives, who lived in their settlements, came from time to time and served with them for seven-day periods.

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.

They cast lots, both young and old, according to their families, to determine which gate they would be responsible for.