Your sandals shall be iron and bronze; as your days, so your strength.

and spoke to them, saying, Return with much riches to your tents, with very much livestock, with silver, with gold, with bronze, with iron, and with very much clothing. Divide the spoils of your enemies with your brethren.

Now behold, in my affliction I have prepared for the house of Jehovah one hundred thousand talents of gold and one million talents of silver, and bronze and iron beyond weight, for it is in abundance. I have prepared timber and stone also, and you may add to them.

Iron is taken out of the earth, and copper is smelted from stone.