'Iron' in the Bible

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.