Bible Verses About Walls: Were probably often strengthened with plates of iron or brass

And I have made thee to this people For a wall--brazen--fenced, And they have fought against thee, And they do not prevail against thee, For with thee am I to save thee, And to deliver thee--an affirmation of Jehovah,

And thou, take to thee an iron pan, and thou hast made it a wall of iron between thee and the city; and thou hast prepared thy face against it, and it hath been in a siege, yea, thou hast laid siege against it. A sign it is to the house of Israel.