Bible Verses About Walls of the Cities: Double

Then a breach was made in the city, and all the men of war fled by night by the way of the gate between the two walls, which was by the king’s garden (now the Chaldeans were against the city round about); and the king went by the way of the Arabah.

ye made also a reservoir between the two walls for the water of the old pool. But ye looked not unto him that had done this, neither had ye respect unto him that purposed it long ago.