19 Then I wanted to know the truth of the fourth beast, which was different from all the others, very frightening, whose teeth were of iron, and his nails of bronze; who devoured, broke in pieces, and stamped the rest with his feet;
Daniel 7:19 Cross References - MKJV
Daniel 2:40-43
40 And the fourth kingdom shall be as strong as iron. Since iron crushes and smashes all things; and as the iron that shatters all these, it will crush and shatter.
41 And as to that which you saw: the feet and toes, part of potters' clay and part of iron; the kingdom shall be divided. But there shall be in it the strength of the iron, because you saw the iron mixed with miry clay.
42 And as the toes of the feet were part of iron and part of clay, so the kingdom shall be partly strong and partly brittle.
43 And as you saw iron mixed with miry clay, they shall mix themselves with the seed of men. But they shall not cling to one another, even as iron is not mixed with clay.
Daniel 7:7
7 After this I looked in the night visions, and behold, a fourth beast, frightening and terrifying, and very strong. And it had great iron teeth; it devoured and broke in pieces, and stamped the rest with its feet. And it was different from all the beasts before it; and it had ten horns.