'Wall' in the Bible

I will make you to this people a fortified bronze wall; and they shall fight against you, but they shall not prevail against you; for I am with you to save you and to deliver you, says Yahweh.

I will kindle a fire in the wall of Damascus, and it shall devour the palaces of Ben Hadad.

I will execute judgment on Bel in Babylon, and I will bring forth out of his mouth that which he has swallowed up; and the nations shall not flow any more to him: yes, the wall of Babylon shall fall.