Daniel 2:40-42

⁴⁰Finally, 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.

⁴¹Just as you saw that the feet and toes were partly of baked clay and partly of iron, so this will be a divided kingdom; yet it will have some of the strength of iron in it, even as you saw iron mixed with clay.

⁴²As the toes were partly iron and partly clay, so this kingdom will be partly strong and partly brittle.