Why do I believe?
So far, the best definition of God that I have come across is this one:
God, the Creator of all things under the sun, is the true parent of all humanity. He is not a parent in the parochial sense, existing only for a certain religion, a certain race, or the residents of a certain region. You may call Him by any name, be it Jehovah, Allah, or any other. What is important is that He certainly exists, lives as the true parent of all people, and is carrying on the great work of Creation. He governs everything in the universe, and He carries out His providence through history in accordance with the principles and laws of nature that He set up at the beginning of time.
[Rev. Sun Myung Moon, April 10, 2006, Peace Message # 3]