This chapter starts with a change of narrator, and Nebuchadnezzar is speaking in the first person. “I, Nebuchadnezzar, was tranquil in my house and flourishing in my palace (Daniel 4:1).” He has another nightmare, and once again brings the wise men of Babylon to help him. All of them fail, until Daniel/Belteshazzar shows up. Nebuchadnezzar relays all of the details of his bizarre dream, and expresses his confidence in Daniel, because of his past experiences with him. Daniel is confused at first, and then gets scared, but eventually he realizes that the dream isn’t meant for Nebuchadnezzar himself, but rather for his enemies. “That is, O king, for you have become great and strong, and your greatness has increased and reached the heaven and your dominion [extends] to the end of the earth (Daniel 4:19).”
The king freaks out again, and the people eventually rebel against him. He is ostracized from humanity, but then he is restored, and once again ends up praising God. I swear, this king runs so hot and cold. He goes back and forth seemingly constantly, and doesn’t seem to have any stockpile of memories or past experiences to draw from. Every day is a clean slate, which strikes me as very dangerous.