Daniel 2:40

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.

Daniel 2:40 Meaning and Commentary

Daniel 2:40

And the fourth kingdom shall be strong as iron
This is not the kingdom of the Lagidae and Seleucidae, the successors of Alexander, as some have thought; for these are designed by the thighs in the third kingdom; and, besides, the kingdom of Christ was to arise in the time of this fourth kingdom, which it did not in that; nor the kingdom of Gog, or the empire of the Turks, as Saadiah, Aben Ezra, and Jarchi; but the Roman empire, which is compared to iron for its strength, firmness, and duration in itself; and for its power over other nations; and also for its cruelty to the Jews above all others, in utterly destroying their city, temple, and nation: forasmuch as iron breaketh in pieces and subdueth all things;
so this kingdom has subdued and conquered all others; not the Jews only, but the Persians, Egyptians, Syrians, Africans, French, Germans, yea, all the world: and as iron that breaketh,
or "even as iron breaketh all these", shall it break in pieces, and bruise;
all nations and kingdoms; hence Rome has been called the mistress of the world, and its empire in Scripture is called the whole world, ( Luke 2:1 ) ( Revelation 17:18 ) .

Daniel 2:40 In-Context

38 and whithersoever sons of men are dwelling, the beast of the field, and the fowl of the heavens, He hath given into thy hand, and hath caused thee to rule over them all; thou [art] this head of gold.
39 And after thee doth rise up another kingdom lower than those, and another third kingdom of brass, that doth rule overall the earth.
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.
41 As to that which thou hast seen: the feet and toes, part of them potter's clay, and part of them iron, the kingdom is divided: and some of the standing of the iron [is] to be in it, because that thou hast seen the iron mixed with miry clay.
42 As to the toes of the feet, part of them iron, and part of them clay: some part of the kingdom is strong, and some part of it is brittle.
Young's Literal Translation is in the public domain.