I have been trying to dance around this, but...damn! you guys are going to squeeeeze it out of me, aren't you? Well, when I was selling ads, I did some trade-out with Silva (no, donheff, not Sylvan...Silva), which meant I could take their basic one week course for free and, in turn, they got a free ad in my publication. A common practice.
OK, now I can definitely tell you that there was NO mention of God or religion, because I would have been outta there fast (not that I hate either, but just not interested in hearing about it from anyone).
My impression was that the Method worked on your memory and allowed you tap into the unconscious part of your brain. In other words, it is a system that starts teaching you how to use more of the brain that we currently do, which, I think, is some low amount like 10% of the brain we now use. So, we do have some room to grow there, right?
I was pretty impressed by what I saw there, but did not keep it up. Why? I just had too much crap to do with a business, house, kid, etc. etc. that to work at it, and you do have to practice at it daily. I regret not doing it now.
I totally agree with Nords' post about what The Silva Method teaches--except for the God part. God never came up at all, so I have no idea where that came from?
OK...I am getting the impression that nobody here has any empirical knowledge..sigh... It was worth a shot.