'Walls of Jerusalem' in the Bible

And I went out by night by the gate of the valley, even to the jackal's well, and to the refuse gate, and viewed the walls of Jerusalem, which were broken down; and the gates thereof were consumed with fire.

But it came to pass, that when Sanballat, and Tobiah, and the Arabians, and the Ammonites, and the Ashdodites, heard that the walls of Jerusalem were being repaired, and that the breaks began to be closed, then they were very angry,