σιδήρεος

They passed the first and second guards and came to the iron gate leading to the city, which opened for them by itself. When they had gone outside and walked the length of one block, the angel suddenly left him.

And she gave birth to a son, a male child, who will rule all the nations with an iron scepter. And her child was caught up to God and to His throne.

And from His mouth proceeds a sharp sword with which to strike down the nations, and He will rule them with an iron scepter. He treads the winepress of the fury of the wrath of God the Almighty.

He will rule them with an iron scepter and shatter them like pottery —just as I have received authority from My Father.

They also had thoraxes like breastplates of iron, and the sound of their wings was like the roar of many horses and chariots rushing into battle.