Here’s the meaning of the king’s dream.
The head of gold:
Nebuchadnezzar and the Babylonian kingdom. It lasted from 636 BC to 539BC. Jeremiah called Babylon “a golden cup in the Lord’s hand”
The breast and arms of silver:
The Medo-Persian kingdom (539BC to 330BC) Darius the Meade conquered Babylon.
The belly and thighs of bronze:
The Grecian kingdom (330-BC to 63BC) Alexander the Great established what was probably the largest empire in ancient times. He died in 323BC
The legs of iron and feet of iron and clay:
The Roman Empire (63BC -475AD) Iron represents strength, but clay represents weakness. Rome was strong in law, organization, and military might, but the empire included so many different people that this created weakness.
This shows how difficult it will be to hold things together at the end of the age. Wherever iron touches clay, there is weakness. Society today is held together by treaties that can be broken, promises that can be ignored, traditions that can be forgotten, organizations that can be disbanded and money making enterprises that can fail. Another truth of this image is that Jesus will return and destroy his enemies. The stone is a frequent image in scripture of Messiah.