'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; isn't it in Rabbah of the children of Ammon? nine cubits was its length, and four cubits its breadth, after the cubit of a man.)

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

a land in which you shall eat bread without scarceness, you shall not lack anything in it; a land whose stones are iron, and out of whose hills you may dig copper.

There you shall build an altar to Yahweh your God, an altar of stones: you shall lift up no iron [tool] on them.

Your sky that is over your head shall be brass, and the earth that is under you shall be iron.

therefore you shall serve your enemies whom Yahweh shall send against you, in hunger, and in thirst, and in nakedness, and in want of all things: and he shall put a yoke of iron on your neck, until he has destroyed you.

Your bars shall be iron and brass. As your days, so your strength will be.