You are alone at home, sitting on the couch lazily watching TV. Suddenly you hear the noise of a piano in the other room. You go to see what made the noise. There's not even a piano in the house to make such a noise. So you go to the window to check whether the noise came from outside or not. But the window turns out to be closed and the noise couldn't have been so loud if it had come through the closed window. A shiver runs down your spine, a shiver of fear. You are now certain that the noise came from a supernatural force. You conclude it to be a ghost. Wait a minute! Why do you conclude it to be a ghost? A supernatural being doesn't just only mean it was a ghost, it could also mean it was God. So why did you declare it to be a ghost over God?
