3 Bible Verses about Iron Objects

They passed the first guard and then the second, and came to the iron gate that led into the city. It opened to them of itself, and they passed out and went along one street, when suddenly the angel left him.

She gave birth to a son, a male child, who is to shepherd all the heathen with a staff of iron; and her child was caught up to God, to his throne.

From his mouth came a sharp sword with which he is to strike down the heathen. He will shepherd them with a staff of iron, and will tread the winepress of the fierce anger of God Almighty.