'Copper' in the Bible

And I look, and lo, a tempestuous wind is coming from the north, a great cloud, and fire catching itself, and brightness to it round about, and out of its midst as the colour of copper, out of the midst of the fire.

And I see as the colour of copper, as the appearance of fire within it round about, from the appearance of his loins and upward, and from the appearance of his loins and downward, I have seen as the appearance of fire, and brightness is to it round about.

and I look, and lo, a likeness as the appearance of fire, from the appearance of His loins and downward -- fire, and from His loins and upward, as the appearance of brightness, as the colour of copper.

“Son of man, the house of Israel has become dross to Me. All of them are copper, tin, iron, and lead inside the furnace; they are the dross of silver.

Just as one gathers silver, copper, iron, lead, and tin into the furnace to blow fire on them and melt them, so I will gather you in My anger and wrath, put you inside, and melt you.

Set the empty pot on its coalsso that it becomes hot and its copper glows.Then its impurity will melt inside it;its rust will be consumed.