Daniel 2:43

43 You also saw that the iron was mixed with the clay. This means that the rulers of that empire will try to unite their families by intermarriage, but they will not be able to, any more than iron can mix with clay.

Daniel 2:43 Meaning and Commentary

Daniel 2:43

And whereas thou sawest iron mixed with miry clay
That is, iron among the clay; otherwise iron and clay will not mix and cement together, as is affirmed in the latter part of the verse; but as some of these toes were of iron, and others of clay, or some part of them were iron, and some part of them of clay, they shall mingle themselves with the seed of men;
the Romans shall mix with people of other and many nations that shall come in among them, and unite in setting up kingdoms; or these kingdoms set up shall intermarry with each other, in order to strengthen their alliances, and support their interests: thus France, Spain, Portugal, and other nations; those of the royal families marry with each other, with such views: but they shall not cleave one to another, even as iron is not mixed
with clay;
and yet these ties of marriage and of blood shall not cause them to cleave to and abide by one another; but ambition and worldly interests will engage them to take part with each other's enemies, or to go to war with one another, to the weakening and hurting each other; and thus the potsherds of the earth will dash one another to pieces; and those who are more powerful, like the iron, will trample the weaker like miry clay under their feet.

Daniel 2:43 In-Context

41 You also saw that the feet and the toes were partly clay and partly iron. This means that it will be a divided empire. It will have something of the strength of iron, because there was iron mixed with the clay.
42 The toes - partly iron and partly clay - mean that part of the empire will be strong and part of it weak.
43 You also saw that the iron was mixed with the clay. This means that the rulers of that empire will try to unite their families by intermarriage, but they will not be able to, any more than iron can mix with clay.
44 At the time of those rulers the God of heaven will establish a kingdom that will never end. It will never be conquered, but will completely destroy all those empires and then last forever.
45 You saw how a stone broke loose from a cliff without anyone touching it and how it struck the statue made of iron, bronze, clay, silver, and gold. The great God is telling Your Majesty what will happen in the future. I have told you exactly what you dreamed, and have given you its true meaning."
Scripture taken from the Good News Translation - Second Edition, Copyright 1992 by American Bible Society. Used by Permission.