'Metal' in the Bible

As I looked, behold, a storm wind was coming from the north, a great cloud with fire flashing forth continually and a bright light around it, and in its midst something like glowing metal in the midst of the fire.

There was the likeness of the appearance of a human being seated on the likeness of the throne high above. I noticed that from what appeared to look like his waist upward there was something that looked like metal that glowed as if it were immersed in fire. Below this there was something resembling fire, with a radiant light surrounding him.

Then I looked, and behold, a likeness as the appearance of a man; from His loins and downward there was the appearance of fire, and from His loins and upward the appearance of brightness, like the appearance of glowing metal.

Son of man, the children of Israel have become like the poorest sort of waste metal to me: they are all silver and brass and tin and iron and lead mixed with waste.

For this cause the Lord has said: Because you have all become waste metal, see, I will get you together inside Jerusalem.

And they will come against you from the north on horseback, with war-carriages and a great band of peoples; they will put themselves in order against you with breastplate and body-cover and metal head-dress round about you: and I will make them your judges, and they will give their decision against you as seems right to them.

Persia, Cush, and Put with them; all of them with body-cover and metal head-dress: