"So I commanded that all the wise men of Babylon be brought before me to interpret the dream for me. When the magicians, enchanters, astrologers and diviners came, I told them the dream, but they could not interpret it for me." NIV translation
As we saw in chapter two, the ungodly cannot interpret the things of God and so, when all the "wise men" were called in to the king they could not help him. This is the same lesson that many of us need to learn today as people are chasing after all kinds of wisdom but many are unwilling to go to the true source of wisdom which is God. Instead of seeking counsel from God's word, even Christians try the latest self help nonsense and psycho babble.
It is interesting to note here that the king is still caught up in idolatry as he describes Daniel as having the "spirit of the holy gods".
There are many today with this same type of attitude in that they want to say that we are all going the same place just taking different paths. As we shall see, that is still idolatry and it is detestable to God.
"I said, 'Belteshazzar, chief of the magicians, I know that the spirit of the holy gods is in you, and no mystery is too difficult for you. Here is my dream; interpret it for me.'" NIV translation
We see that the king had made Daniel the chief of the magicians and so acknowledged the power of the God that Daniel served. But, he was still caught up in idolatry as God does not share His position with any other so-called gods. He has seen the power of God at work through Daniel but does not reject the false gods as he had looked to them first.
"These are the visions I saw while lying in my bed: I looked, and there before me stood a tree in the middle of the land. Its height was enormous. The tree grew large and strong and its top touched the sky; it was visible to the ends of the earth. Its leaves were beautiful, its fruit abundant, and on it was food for all. Under it the beasts of the field found shelter, and the birds of the air lived in its branches; from it every creature was fed." NIV translation
So far, the vision seems to be a good thing as it is a giant tree that is providing food and shelter to all. It reminds me of the tree of life described in Revelation 22 where God provides for His people and the fact that Nebuchadnezzar was caught up in his pride and strength as he considered himself to also be a god.