Daniel 7:12 - Matthew Poole's English Annotations on the Holy Bible

They had their dominion taken away; the prophet chiefly intends the fourth empire, and therein the proud, blasphemous horn; yet did not wholly omit to speak of the three first empires, and what became of them. He saith they were wholly taken away, that is, successively, as histories tell us. The beast and the horn perish together, for the Holy Ghost tells us that the horn shall prevail against the saints till the Ancient of days come to sit in judgment, and because the session of judgment in Daniel's vision was principally to pluck up by the roots that wicked horn, Daniel 7:26 following, Daniel's expectation had failed him, if the horn had not perished with the beast. Besides, the state of the beast under the horn was to be a time, times, and the dividing of time, Daniel 7:25, of which more when we come to it.