"'A word was secretly brought to me, my ears caught a whisper of it. Amid disquieting dreams in the night, when deep sleep falls on people, fear and trembling seized me and made all my bones shake. A spirit glided past my face, and the hair on my body stood on end.'" NIV translation
Now, Eliphaz begins to sound all mysterious as he speaks of a dream in which he says that he was given secret knowledge about this situation. He builds it up with suspense as a great mystical experience and you can imagine the crowd hanging on his every word.
There are people that make every dream that they have out to have some deep spiritual meaning. While God has, does, and will continue to use dreams, not every dream is from God. Some can just come from our own minds as we lay down with something specific troubling us while others can actually come from the devil himself.
So, how do you tell the difference? The best way is through the power of the Holy Spirit and keeping in mind that everything that comes from God will be to build us up in our faith. Here, we see that Eliphaz was seized by fear and we are reminded that, as Christians, we are not to be afraid of anything because God is with us. Remember that fear is the opposite of faith.