What does Daniel 2:40 mean?
Daniel's explanation of Nebuchadnezzar's dream (Daniel 2:1–3) described the symbolism behind a massive statue made of various materials (Daniel 2:31–35). The dream revealed what was then the unknown future of the middle east (Daniel 2:27–28). The statue's golden head represented Babylon, ruled with absolute power by Nebuchadnezzar (Daniel 2:37–38). The silver torso and arms symbolized the Medo-Persian Empire, which would be less absolute and somewhat divided as compared to Babylon. Next was a bronze midsection and thighs. This is Greece, which would begin united but split apart after the death of Alexander the Great (Daniel 2:39).The fourth kingdom is represented by the statue's legs and feet. The legs are iron—much harder than any other substance in the statue. However, this iron kingdom suffers from a sharp division, right from its beginning. This continues, symbolically, as the dream makes note of the statue's ten separate toes.
This represents what would become the power of the Roman Empire. As iron could overcome metals such as gold, silver, and bronze, so would the Romans conquer the known world. And, continuing the pattern, they would initially have a less-absolute ruler than their predecessor. Rome would always struggle with internal strife, which would eventually create open hostility, inner weakness, and the eventual shattering of the empire.
This ultimate end is symbolized by the toes and feet of the statue (Daniel 2:41), made of mixed iron and clay. Those two substances will not bond to each other, and clay is very brittle.