40 And the fourth kingdom is strong as iron, because that iron is breaking small, and making feeble, all [things], even as iron that is breaking all these, it beateth small and breaketh.
40
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.
Young's Literal Translation is in the public domain.