'Walls' in the Bible

I went out at night through the Valley Gate toward the Serpent’s Well and the Dung Gate, and I inspected the walls of Jerusalem that had been broken down and its gates that had been destroyed by fire.

When Sanballat, Tobiah, and the Arabs, Ammonites, and Ashdodites heard that the repair to the walls of Jerusalem was progressing and that the gaps were being closed, they became furious.