The ram, &c., having two horns, are the kings, or kingdoms rather, of Media and Persia. And the rough goat is the king, or kingdom, of Grecia. And the great horn, &c., is the first king Namely, Alexander the Great, the first Grecian king that reigned over Asia. Now that being broken That is, this first king being deceased; four kingdoms shall stand up, &c. Shall arise from it, under the rule of the same nation that the first king was of, namely, the Grecian. But not in his power They were to be kingdoms of Greeks, not of Alexander's own family, but only of his nation; neither were they to be equal to him in power and dominion, as an empire united is certainly more powerful than the same empire divided, and the whole is greater than any of its parts.
Related Commentaries of Daniel 8:20
Daniel 8:20-22
20 The ram which thou sawest having two horns are the kings of Media and Persia.
21 And the rough goat is the king of Grecia: and the great horn that is between his eyes is the first king.
22 Now that being broken, whereas four stood up for it, four kingdoms shall stand up out of the nation, but not in his power.