Daniel 2:39-43

39Another kingdom inferior to you shall arise after you, and yet a third kingdom of bronze, which shall rule over all the earth.

40And 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.

41And 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 firmness of iron shall be in it, just as you saw iron mixed with the soft clay.

42And as the toes of the feet were partly iron and partly clay, so the kingdom shall be partly strong and partly brittle.

43As you saw the iron mixed with soft clay, so they will mix with one another in marriage, but they will not hold together, just as iron does not mix with clay.