Nehemiah 3:15
But the gate of the fountain repaired Shallun the son of Col-hozeh, the ruler of part of Mizpah; he built it, and covered it, and set up the doors thereof, the locks thereof, and the bars thereof, and the wall of the pool of Siloah by the king’s garden, and unto the stairs that go down from the city of David.
Nehemiah 3:15 belongs to the account of Nehemiah's mission to rebuild Jerusalem, with its detailed record of the rebuilding of its gates and walls. That rebuilding mission was carried out amid hostility from nearby leaders who sought to hinder the work.
The repairing and strengthening of the city pictured in the verse applies to restoring worship in households. Such household restoration makes Zion's gates and walls strong as a defense for the people.