Psalm 2:9: “You will break them with a rod of iron; you will dash them in pieces like a potter’s vessel.”
“Iron” is a symbol of strength, and a “scepter” (or staff) represents royal authority. Thus, an “iron scepter” signifies the Messiah’s ruling authority. Revelation quotes this verse three times, declaring that the Messiah’s enemies will be completely conquered (Revelation 2:27; 12:5; 19:15).
Revelation 2:27: “He will rule them with an iron scepter; he will dash them to pieces like pottery—just as I have received authority from my Father.”
Revelation 12:5: “She gave birth to a son, a male child, who will rule all the nations with an iron scepter. And her child was snatched up to God and to his throne.”
Revelation 19:15: “Coming out of his mouth is a sharp, double-edged sword with which to strike down the nations. ‘He will rule them with an iron scepter.’ He treads the winepress of the furious wrath of God Almighty.”