'Iron' in the Bible

For only Og the king of Bashan remained of the residue of giants: behold, his bedstead was a bedstead of iron; is it not in Rabbah of the children of Ammon? its length was nine cubits, and its breadth four cubits, after the cubit of a man.

But you hath Jehovah taken, and hath brought you forth out of the iron furnace, out of Egypt, that ye might be to him a people of inheritance, as it is this day.

a land wherein thou shalt eat bread without scarceness, where thou shalt lack nothing; a land whose stones are iron, and out of whose mountains thou wilt dig copper.

as when he goeth into the wood with his neighbour to hew wood, and his hand fetcheth a stroke with the axe to cut down the tree, and the iron slippeth from the handle, and lighteth upon his neighbour, that he die; such an one shall flee unto one of these cities, and live;

And there shalt thou build an altar to Jehovah thy God, an altar of stones; thou shalt not lift up an iron tool upon them;

And thy heavens which are over thy head shall be brass, and the earth which is under thee, iron.

thou shalt serve thine enemies whom Jehovah will send against thee, in hunger, and in thirst, and in nakedness, and in want of everything; and he shall put a yoke of iron upon thy neck, until he have destroyed thee.

Iron and brass shall be thy bolts; And thy rest as thy days.