Acts.12.10  When they had passed the first and the second guard, they came to the iron gate leading into the city. It opened to them of its own accord, and they went out and passed on through one street; and immediately the angel left him.
Rev.2.27  and he shall rule them with a rod of iron, as when earthen pots are broken in pieces, even as I myself have received power from my Father;
Rev.9.9  they had scales like iron breastplates, and the noise of their wings was like the noise of many chariots with horses rushing into battle.
Rev.12.5  she brought forth a male child, one who is to rule all the nations with a rod of iron, but her child was caught up to God and to his throne,
Rev.18.12  cargo of gold, silver, jewels and pearls, fine linen, purple, silk and scarlet, all kinds of scented wood, all articles of ivory, all articles of costly wood, bronze, iron and marble,
Rev.19.15  From his mouth issues a sharp sword with which to smite the nations, and he will rule them with a rod of iron; he will tread the wine press of the fury of the wrath of God the Almighty.