'Iron' in the Bible

Because he had frequently been prisoned in chains and iron bands, and the chains had been parted and the bands broken by him: and no man was strong enough to make him quiet.

And when they had gone past the first and second watchmen they came to the iron door into the town, which came open by itself: and they went out and down one street; and then the angel went away.

Through the false ways of men whose words are untrue, whose hearts are burned as with a heated iron;

Now if we put bits of iron into horses' mouths so that they may be guided by us, we have complete control of their bodies.

And he will be ruling them with a rod of iron; as the vessels of the potter they will be broken, even as I have power from my Father:

And they had breastplates like iron, and the sound of their wings was as the sound of carriages, like an army of horses rushing to the fight.

And she gave birth to a son, a male child, who was to have rule over all the nations with a rod of iron: and her child was taken up to God and to his high seat.

Gold, and silver, and stones of great price, and jewels, and delicate linen, and robes of purple and silk and red; and perfumed wood, and every vessel of ivory, and every vessel made of fair wood, and of brass, and iron, and stone;

And out of his mouth comes a sharp sword, with which he overcomes the nations: and he has rule over them with a rod of iron: and he is crushing with his feet the grapes of the strong wrath of God the Ruler of all.