Acts.12.10When they had passed the first and the second guard, they came to the iron gate leading into the city. It opened for them of its own accord, and they went out and went along one street, and immediately the angel left him.
Rev.2.27and he will rule them with a rod of iron, as when earthen pots are broken in pieces, even as I myself have received authority from my Father.
Rev.9.9they had breastplates breastplates of iron, and the noise of their wings was the noise of many chariots with horses rushing into battle.
Rev.12.5She gave birth to 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.18.12cargo of gold, silver, jewels, pearls, fine linen, purple cloth, silk, scarlet cloth, all kinds of scented wood, all kinds of articles of ivory, all kinds of articles of costly wood, bronze, iron and marble,
Rev.19.15From his mouth comes a sharp sword with which to strike down the nations, and he will rule them with a rod of iron. He will tread the winepress of the fury of the wrath of God the Almighty.