'Iron' in the Bible

(For only Og king of Bashan remained of the remnant of the Rephaim; behold, his bedstead was a bedstead of iron; is it not in Rabbah of the children of Ammon? nine cubits was the length thereof, and four cubits the breadth of it, after the cubit of a man.)

But Jehovah hath taken you, and brought you forth out of the iron furnace, out of Egypt, to be unto him a people of inheritance, as at this day.

a land wherein thou shalt eat bread without scarceness, thou shalt not lack anything in it; a land whose stones are iron, and out of whose hills thou mayest dig copper.

And there shalt thou build an altar unto Jehovah thy God, an altar of stones: thou shalt lift up no iron tool upon them.

And thy heaven that is over thy head shall be brass, and the earth that is under thee shall be iron.

therefore shalt thou serve thine enemies that Jehovah shall send against thee, in hunger, and in thirst, and in nakedness, and in want of all things: and he shall put a yoke of iron upon thy neck, until he have destroyed thee.

Thy bars shall be iron and brass; And as thy days, so shall thy strength be.