Earlier, it said that Belshatzar died!
Malbim: This begins the second half of Sefer Daniel ? his prophecies. The first half discussed what happened to him. Anshei Keneses ha'Gedolah, who wrote Sefer Daniel, wrote this verse; after this, Daniel himself speaks. Yirmeyah (25:27) prophesized that all Goyim will serve Nebuchadnetzar, his son and grandson. When Belshatzar his grandson became king, Hashem showed Daniel that Malchus Bavel will end soon, and the kingdoms that will stand after it, until the Ketz [of Mashi'ach].
Why does it say "Chelem Chazah"? Regarding Nebuchadnetzar, it says Chalam Chalom!
Malbim: This shows that Daniel's dream was a prophecy. Also, the primary part of the dream was the vision of the four Chayos.
What do we learn from "v'Chezvei Reishe Al Mishkeve"?
Malbim: Some dreams come via flowing of the blood and Nefesh ha'Chiyunis ? their source is in the heart. This dream's source was from sinews of the brain and intellect, from the influence of purely intellectual beings.
Why does it say "Bedayin Chelma Chesav"?
Malbim: When he woke, he immediately wrote it, lest he forget a matter.
What do we learn from "Reish Milin Amar"?
Ibn Ezra citing Yefes: He said the primary matters, but not all the matters.
Ibn Ezra: It is the beginning of Daniel's words.
Malbim #1: Because this writing has the law of Kisvei ha'Kodesh, he said each word before writing it.
Malbim #2: This dream teaches about the four kingdoms. This was already known from Nebuchadnetzar's dream, but that was only chapter headings, but not details. Here it says that the chapter headings of this dream, he already said in the interpretation of Nebuchadnetzar's dream.
