Daniel 2:9

But if ye will not make known unto me the dream, there is but one decree for you, one and the same sentence of condemnation would strike them all: for ye have prepared lying and corrupt words to speak before me, base misrepresentations, by which they kept him for a fool, till the time be changed, until by some lucky chance they might get into possession of the secret, or until the king would withdraw his demand. Therefore tell me the dream, which he would immediately recognize, and I shall know that ye can show me the interpretation thereof. It was clear to Nebuchadnezzar that the wise men were unable to reveal hidden things, and therefore he concluded that the interpretation which they would offer in case they would find out the contents of the dream would, at best, be mere guesswork.