I'm not a christian. My girlfriend is. She wants me to believe but I just can't. I don't have enough proof. I'm sorry to say that I'm not a very faithful person. I need evidence to believe something.
So what I'm asking is for the kind folks here to give me hard evidence that Christianity is true. As for my current beliefs, I believe a condensed version of Judaism that I could get into upon request but won't bore you with at this time.
Essentially, if you can convince me in some way that Jesus really is the son of God and everything he did really happened, I'll convert. And just a forewarning, I would prefer you don't use something along the lines of "it says so in the Bible" as proof. Let's just go off the assumption that I don't believe in the Bible. I apologize if this offends anyone. I'm not meaning to. I just want to find the truth.
There is actually a great deal of historical evidence that is extra-Biblical which supports the notion that Jesus lived, was crucified, did spiritual healings, was a prominent figure, had a following who believed him to be the Messiah, etc. There is also a great deal of historical evidence to back up the stories of the apostles, of Paul and much of the early church and its many sects.
However, I don't think, with all this historical research, you will ever believe in God in the way that a "Christian" does. And I can say that from experience because I also require lots of evidence. Based on this evidence I believe in much of Jesus' historicity and his message of repentance, forgiveness, love of God, helping the poor, loving your neighbour, and not valuing material possessions. In this sense, I feel that I am a "Christian" (aka "Christ-like") because I hold these as high ideals to strive towards. And I find that this functional and pragmatic view of Jesus' message is much more fulfilling for an evidence-based, science-y person like myself.
As far as salvation and Christ's divinity goes. Both these theological notions are impossible to "prove" within an evidence-based, scientific framework. This is because it largely comes down to personal faith and personal experience. Often you'll get responses from Christians which go along the lines of "You just have to go meet Jesus face to face and accept him into your heart". And I don't doubt them that this is the most foolproof way to go about it but, for me, it is ultimately subjective and doesn't really "prove" the truthfulness of the claim.
If you're looking for concrete, historical evidence of Jesus as a historical figure then that evidence is plentiful. If you're looking for concrete, historical evidence that Jesus is God who came to wash away all your sins then you won't find it. If you want to believe it, you just have to make the leap of faith and plunge head-first into the whole system of belief. Try it, see if it makes your life more fulfilling, more God-centred, more truth-seeking.
(But I would advise you to not date the girl who is Christian because I've broken up with two girlfriends based on their strong beliefs in Christianity causing conflict with my more loose, scientific, wandering beliefs).