This past week I was working on my sermon.  I was sitting at the computer pecking away at the keys.  Over my shoulder, illuminating my fingers as they tapped their way across the keyboard, was a light bulb from a single lamp.   As the thoughts of my mind melted through my fingers and spilled on my monitor, my concentration became distracted by the flickering of that light source.  First, I thought the blub was about to blow.  I expected any moment to be in the dark with my face reflecting the...