'Rod of Iron' in the Bible

You shall break them with a rod of iron; You shall dash them in pieces like a potter's vessel.

And he will rule them with a rod of iron, as the vessels of a potter they will be broken to pieces, even as I received from My Father.

And she bore a son, a male, who is going to rule all nations with a rod of iron. And her child was caught up to God and to His throne.

And out of His mouth goes a sharp sword, so that with it He should strike the nations. And He will shepherd them with a rod of iron. And He treads the winepress of the wine of the anger and of the wrath of Almighty God.