In this fourth chapter of Daniel we learn of this second dream that parallels with the first dream in chapter two. Both dream images represent Nebuchadnezzar, the statue in the first dream and then the tree of great height in the second dream. The all-golden statue that Nebuchadnezzar made in chapter three is based on the dream of the statue in the second chapter. The dream is one (Gen_41:25) and both of these dreams are demonstrating what is within every human being. There are progressive steps that need to be taken in order to bring us to see the beast on the throne (Ecc_3:18-19 , Deu_7:22) of our own hearts, and the Lord uses these dreams and the resultant effect of them in
Nebuchadnezzar’s life to teach us something about ourselves (1Pe_1:12 , 1Co_10:11).

Ecc 3:18 I said in mine heart concerning the estate of the sons of men, that God might manifest them, and that they might see that they themselves are beasts.
Ecc 3:19 For that which befalleth the sons of men befalleth beasts (Dan_2:31-34 , Dan_7:3-8); even one thing befalleth them: as the one dieth, so dieth the other; yea, they have all one breath; so that a man hath no preeminence above a beast: for all is vanity.

Deu 7:22 And the LORD thy God will put out those nations [“they themselves are beasts”] before thee by little and little: thou mayest not consume them at once, lest the beasts of the field increase upon thee [progressive judgement of the land which represents our bodies].

1Pe 1:12 Unto whom it was revealed, that not unto themselves, but unto us they did minister the things, which are now reported unto you by them that have preached the gospel unto you with the Holy Ghost sent down from heaven; which things the angels desire to look into.

1Co 10:11 Now all these things happened unto them for ensamples: and they are written for our admonition, upon whom the ends of the world are come.

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Here’s the link to the video and audio for this and all the studies thus far with the Book of Daniel: Dan 4:19-37 Pride goeth Before Destruction, and an Haughty Spirit Before a Fall