The head of that statue was of fine gold, its chest and arms of silver, its middle and thighs of bronze,
its legs of iron, its feet partly of iron and partly of clay.
As you looked on, a stone was cut out, not by human hands, and it struck the statue on its feet of iron and clay and broke them in pieces.
Then the iron, the clay, the bronze, the silver, and the gold, were all broken in pieces and became like the chaff of the summer threshing floors; and the wind carried them away, so that not a trace of them could be found. But the stone that struck the statue became a great mountain and filled the whole earth.
"This was the dream; now we will tell the king its interpretation.
You, O king, the king of kings—to whom the God of heaven has given the kingdom, the power, the might, and the glory,
into whose hand he has given human beings, wherever they live, the wild animals of the field, and the birds of the air, and whom he has established as ruler over them all—you are the head of gold.
After you shall arise another kingdom inferior to yours, and yet a third kingdom of bronze, which shall rule over the whole earth.
And there shall be a fourth kingdom, strong as iron; just as iron crushes and smashes everything, it shall crush and shatter all these.
References for Daniel 2:40
As you saw the feet and toes partly of potter's clay and partly of iron, it shall be a divided kingdom; but some of the strength of iron shall be in it, as you saw the iron mixed with the clay.
As the toes of the feet were part iron and part clay, so the kingdom shall be partly strong and partly brittle.
As you saw the iron mixed with clay, so will they mix with one another in marriage, but they will not hold together, just as iron does not mix with clay.
References for Daniel 2:43