G4603–σιδήρεος–sidēreos

and having passed through a first ward, and a second, they came unto the iron gate that is leading to the city, which of its own accord did open to them, and having gone forth, they went on through one street, and immediately the messenger departed from him.

σιδηρᾶν sidēran “iron”

and he shall rule them with a rod of iron -- as the vessels of the potter they shall be broken -- as I also have received from my Father;

σιδηρᾷ, sidēra “of iron,”

and they had breastplates as breastplates of iron, and the noise of their wings `is' as the noise of chariots of many horses running to battle;

σιδηροῦς, sidērous “of iron,”

and she brought forth a male child, who is about to rule all the nations with a rod of iron, and caught away was her child unto God and His throne,

σιδηρᾷ. sidēra “of iron.”

and out of his mouth doth proceed a sharp sword, that with it he may smite the nations, and he shall rule them with a rod of iron, and he doth tread the press of the wine of the wrath and the anger of God the Almighty,

σιδηρᾷ sidēra “of iron”