'Iron' in the Bible

(For only Og, king of Bashan, was left from the remnant of the Rephaim. Indeed, his bedstead--it [was] a bedstead of iron. It is in Rabbah of the {Ammonites}. Nine cubits [is] its length, and four cubits [is] its width according to the cubit of a man.)

But Yahweh has taken you and brought you out from the furnace of iron, from Egypt, to be a people of inheritance to him, {as it is this day}.

[to] a land where you may eat food in it {without scarcity}; you will not find anything lacking in it, a land where its stones [are] iron and from its mountains you can mine copper.

{For example}, when somebody goes with his neighbor into the forest to cut wood, and the iron [head] slips from the handle [of the tool] and strikes his neighbor and he dies, [then] he may flee to one of these cities, and [so] he may live.

And you shall build an altar there for Yahweh your God, an altar of stone, but {you shall not use an iron tool to shape the stones}.

And your heavens that [are] over your heads shall be [like] bronze, and the earth that [is] under you [shall be like] iron.

then you shall serve your enemies, whom Yahweh will send against you [under conditions of] famine, in thirst, in nakedness, and in lack of everything; and he shall place a yoke of iron on your neck {until he has destroyed you}.

Your bars [are] iron and bronze, and as your days, [so is] your strength."