Porters: Guards at the City Gates, the Doors of the King's Palace, and Doors of the Temple

These were the gatekeepers: Shallum, Akkub, Talmon, Ahiman, and their relatives. Shallum was their chief; …

…were over the laborers and supervised all who did the work, task by task. Some of the Levites were secretaries, officers, and gatekeepers.

The singers, the descendants of Asaph, were at their stations according to the command of David, Asaph, Heman, and Jeduthun the king’s seer. And the gatekeepers at each gate did not need to leave their posts, because their fellow Levites made preparations for them.