Genesis 41:38 - Where is the wise?

And Pharaoh said unto his servants, Can we find such a one as this is, a man in whom the Spirit of God is?

Where shall wisdom be found? Like Joseph, Daniel was commended for his understanding in all visions and dreams according to the Spirit of God that dwelt within him (Daniel 4:8); for the wisdom of man could not comprehend the hidden wisdom of the Spirit (Daniel 5:8).

Genesis 41:28 - The Universal Communication of God

This is the thing which I have spoken unto Pharaoh: What God is about to do he sheweth unto Pharaoh.

There is a God in heaven who reveals mysteries in the dreams of man. Just as God showed unto Pharaoh the future in a dream, God also showed King Nebuchadnezzar what will happen in the future (Daniel 2:28). God speaks to whomever he wishes, to both the believer as well as the non-believer.