I see Natural Selection as a passive force. There's nothing behind it. To me the "moving components" are the organisms, their genes and the genetic drift in the population.
Sorry, I can't agree with that.
"Natural selection" is a term scientists use to describe a very real phenomenon whereby some critters reproduce more successfully than others. The environment acts as the selector, and the range of variability within a population is the subject of that selection.
One end of the bell curve will have a much tougher time--for any given trait--than the other. Add up all of those hundreds or thousands of bell curves within a population, factor in the correct differential weights for each, and you can begin to model the selection pressures. We can't do that all that well yet, but that doesn't mean that the phenomenon doesn't exist.
Religious belief does not constitute scientific evidence, nor does it convey scientific knowledge.