'City of David' in the Bible

And the gate of the fountain hath Shallum son of Col-Hozeh, head of the district of Mizpah, strengthened: he doth build it, and cover it, and set up its doors, its locks, and its bars, and the wall of the pool of Siloah, to the garden of the king, and unto the steps that are going down from the city of David.

and by the gate of the fountain and over-against them, they have gone up by the steps of the city of David, at the going up of the wall beyond the house of David, and unto the water-gate eastward.