On attempting to mix iron with clay.

Daniel2:42,43NKJV"And as the toes of the feet were partly of iron and partly of clay,so the kingdom shall be partly strong and partly fragile.As you saw iron mixed with ceramic clay,they will mingle with the seed of men;but they will not adhere to one another just as iron does not mix with clay."

 Here is an example of what this text is referring to.