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

And I will make thee vnto this people a strong brasen wall, and they shall fight against thee, but they shall not preuaile against thee: for I am with thee to saue thee and to deliuer thee, saith ye Lord.

Moreouer, take an yron pan, and set it for a wall of yron betweene thee and the citie, and direct thy face towarde it, and it shall be besieged, and thou shalt lay siege against it: this shall be a signe vnto the house of Israel.