Evidence would start with observing the very real power of God, especially among the Christian quarter.
Hi again PP, there is, of course, the Bible, which is a proven historic record, replete with such evidence (of God's very real power as seen in the world, and in/through the lives of both the Jews (and those who came before them) and of Christians, of course.
There is also the testimony and contemporary evidence of God's transforming work in the lives of non-Christians (like you are and like I was). This astounds me even today, because for years I was just like you are now, and then one day I wasn't anymore. And it wasn't like I had any big problems or reasons that I could point to as to why I would have suddenly wanted my life to be different, why I desired to come to Christ. In fact, I had what might be referred to (by the world's standards anyway) as a very enviable life. EVERYTHING seemed to be going my way, the way I had planned and always hoped that it would.
I loved my life (sinful as I now realize that it was), but right in the middle of all that "good" I began to wonder if this was all there really was to life, if this was all it would ever mean, and almost before I knew what was happening, I had what can perhaps be best described as a complete and overnight paradigm shift in my way of thinking, and God was there and had the answers to all of my questions and concerns (and that complete "change" in my thinking/understanding about life that occurred on Nov 2nd, 1986, remains the way I still think about/see things today).
I've been a Christian for a little over thirty years now, and I've seen many others (just like I was and you are now), be transformed into something impossibly different than they were. They go from, at best, denying and/or hating God (or just not caring about Him at all), and loving their sinful activities (and wanting to please themselves whenever it's possible to do so), to knowing God as their loving, caring Father, and wanting to obey and please Him instead. This is something that I see as miraculous, and it occurs regularly within Christianity, but I can hardly think of an example of something like it happening outside of Christianity. And if it can happen to me, it can happen to you as well
Whoa, this is going on longer than I planned. Sorry about that. There is a lot more I could tell you about my personal experiences/why/how I became a Christian (if you'd like me to, that is
), so let me know if you do.
Yours and His,
David
p.s. - just to be clear, we Christians aren't anything special in and of ourselves. While God has made us into something new, and in doing so changed (in a big way) what we desire most in this life, we are still the same in many ways. The biggest difference isn't that we are no longer "sinners in need of a Savior" (because we will always have a great need of Him as such), rather, we are sinners who have found Him and, as a result, have had the weight of the world lifted off our our shoulders, because we are sinners who have been forgiven