there is an evidence we that believe all have seen, experienced, and tabulated, the working of the Holy Spirit.
there is a paradox at work here, not unlike Heisenberg's - to measure it, you must first be moved, and to be moved by it you must believe it can be measured.
you're never going to accept that God is "measurable" until you have a little h-nu of faith to reflect off of Him. You're never going to detect that h-nu he emits until you believe and point your photon detector at Him.
this is why Christ said we had to "become as little children" before we can enter the kingdom, and demonstrated by his teaching in parables - as he told the disciples, in this method because the ones with understanding would understand, and the ears of those that would not hear, could not hear.
This same argument, "just because we don't understand how A could have evolved to B doesn't mean they didn't" -- don't you agree, "just because we don't have undeniable proof that Christ is who he says he is, doesn't mean he isn't" ?
we can't see the distant stars until we build a bigger telescope, and then we see that we need an even bigger telescope to understand what we saw with the first one. i'd like to suggest to you, that you "build a better telescope" to look at Christ, and when you don't understand all that you see at this resolution, build a bigger one yet, and search Him out even closer.
if there is any non-zero probability that He is who He said He is, nothing could be worthy of greater energy spent to study; nothing could be a more wonderful mystery to strain our comprehension at.