Daniel 2:43
And as you saw the iron mixed with earth, they will give their daughters to one another as wives: but they will not be united one with another, even as iron is not mixed with earth.
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 were in part of iron and in part of potter's earth.