In my case, it is the explaining part that is difficult for me. I had an experience similar to the one Paul writes about - where whether it was 'in the body' or 'out of the body', I cannot say, but it is an 'awakening' to the oneness that I believe is Christ in each one of us. Do I 'know' whether Jesus Christ was an actual historical person? NO, and I don't believe I ever can know that definitively. As of yet, his existence cannot be PROVEN; someday it may be if verifiable archeological evidence turns up. Based on the writings his supposed existence inspired, I tend to believe that he was, but again this cannot be PROVEN.
The Christ I know is the Christ as revealed in the gospels written about him - not just the 4 I was taught to only accept by the JWs, but the many other gospels that have been written about him and his teachings.
I don't doubt that Christ exists. Where he exists is where words fail me to convey, but I see him in each and every mortal being. As George Harrison put it: I really want to see you Lord, but it takes so long, my Lord...
I'm poor at explanations...Timothy Freke, stand-up philosopher, comes closest to being able to convey this 'awakening' which I believe is available to EVERYONE...if you have time, google him and check him out!