> the problem is that there have been so many interpretations throughout history
Not really. An honest study of denominational differences yields very few variant interpretations through history. We all agree on the large majority bulk of what we believe.
> many causing wars
Yeah, we regret the violence of previous eras. There was no cause for it and no excuse for it, either. Just misguided people.
> that I am left confused as to what is the true revelation, especially considering other religions.
It's the same as we do with anything else. There are standards of truth that we consider. Does it cohere with reality? Does it speak authentically of the human condition? Is it consistent with itself? Is it consistent with everything else we know to be true (truth in one field shouldn't contradict truth in another)? Is it consistent with logic?
We apply the same questions and standards to religion that we place elsewhere as we compare the claims and teachings of the various religions. I, obviously, find Christianity to be the only one that holds water.
> Doesn't forgiveness require something to forgive in the first place? Wouldn't this cancel out the virtue of the goal?
Yes, it does. We all need to be forgiven for our sins that we do. The sin that is our nature was can't help; that doesn't need to be forgiven, it needs to be transformed. The sins that we *do* need to be forgiven. I don't see what this would cancel out the goal of having a love relationship with God; instead, it's what makes it possible.
> This makes the matter unfalsifiable
Technically it is, yes. I don't put it out there as a scientific thing, but instead as what the Bible says and that many people have experienced.
> The claim allows the theist to make accusations however they want in order to fit the biblical narrative.
Let's hope not. I always hate making unfounded accusations, though I'm aware that others do.
> Does this mean he exists simply because they were dedicated?
I'm trying to understand this question. if I'm reading it right, no, I'm not saying at all that God exists because people were dedicated to Him. What I meant by the reference is that Christianity is not a call to the easy and happy life. It's a call to salvation and relationship. What this life is like for us, circumstantially and emotionally, has no particular connection to what Christianity is all about: forgiveness from sin and a relationship with God. Whether I'm rich or poor, healthy or infirmed, powerful or oppressed, smart or illiterate doesn't matter (Phil. 4.11-12; 1 Cor. 12.13; Col. 3.11; Gal. 3.28).