Daniel 2:43
As 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.
Treasury of Scripture Knowledge
Summary
And whereas thou sawest iron mixed with miry clay, they shall mingle themselves with the seed of men: but they shall not cleave one to another, even as iron is not mixed with clay.
General references
Bible References
General references
Daniel 2:33
its legs of iron, its feet partly of iron and partly of clay.