Writers Block

Did you ever get the feeling when you are studying scripture for a purpose that maybe there is something in there you are supposed to find or that is relevant to your life that you just can't quite make out? I have been trying to prepare and write my sermon for Sunday evening on Ephesians 5:15-21 and after 3 days of trying to get it out on paper I have only about 1/3 of what I need to fill the time. And getting that far has been like trying to walk through runny mud with brick shoes. I know that I am not a polished or experienced preacher by any stretch of imagination, but this is even odd for me. I have been studying and praying the entire week about this and have just been left high and dry on a sand bar without rescue in sight, and my time is running short as I got about 27 hours till I have to stand up and give God's word to His people. So I guess what I am looking for is some willing friends to join my in prayer for this that God's will is made evident to me so I can present His truth to those needing to hear it. thanks.