'Walls of Jerusalem' in the Bible

And I went out by night by the valley-gate, even toward the jackal-fountain, and to the dung-gate; and I viewed the walls of Jerusalem, which were in ruins, and its gates were consumed with fire.

And it came to pass, when Sanballat, and Tobijah, and the Arabians, and the Ammonites, and the Ashdodites heard that the walls of Jerusalem were being repaired, that the breaches began to be stopped, then they were very wroth,