NYC Girl,
If your house doesn't close, there's may be a benefical reason for it. Instead of praying for it to sell, please pray for the outcome to be whatever is in the best interest of the souls involved. Sometimes when you get what you pray for, it turns out not to be what was best for you or others involved. Let me give you an example. Maybe your buyer didn't really have the down payment money. But because so many people prayed for the closing to happen, one of his family tragically dies, leaving him the insurance money for not only your house, but a nice funeral also. Prayer is powerful and should be used wisely. When you pray for something in particular, you usually get opportunities to develop the traits necessary to bring about the change you desire. So never pray for patience; you'll get opportunities to develop it! Instead acknowledge that God knows your needs and express your faith in knowing he won't let you starve. Instead of being desperate, express to anyone who will listen that you know it will sell because it is priced right, clean, and prepared for sale. Positivity attracts better than desperation. Trust fosters cooperation. I am not trying to be a know-it-all, just wanted to share another perspective for you to think about.