'Iron' in the Bible

Only King Og of Bashan was left of the remaining Rephaites. (It is noteworthy that his sarcophagus was made of iron. Does it not, indeed, still remain in Rabbath of the Ammonites? It is thirteen and a half feet long and six feet wide according to standard measure.)

a land where you may eat food in plenty and find no lack of anything, a land whose stones are iron and from whose hills you can mine copper.

Then you must build an altar there to the Lord your God, an altar of stones -- do not use an iron tool on them.

The sky above your heads will be bronze and the earth beneath you iron.

instead in hunger, thirst, nakedness, and poverty you will serve your enemies whom the Lord will send against you. They will place an iron yoke on your neck until they have destroyed you.

The bars of your gates will be made of iron and bronze, and may you have lifelong strength.