King James Version
And the fourth kingdom shall be strong as iron: forasmuch as iron breaketh in pieces and subdueth all things: and as iron that breaketh all these, shall it break in pieces and bruise.English Standard Version
And there shall be a fourth kingdom, strong as iron, because iron breaks to pieces and shatters all things. And like iron that crushes, it shall break and crush all these.New International Version
Finally, there will be a fourth kingdom, strong as iron-for iron breaks and smashes everything-and as iron breaks things to pieces, so it will crush and break all the others.