If i understand jeff right, he means that you can't pass on your experience of god to someone else.
Well, that obviously goes without saying. Although if I saw a preacher/faith-healer restore someone's missing leg then that experience would communicate itself to me. Of course the other side would argue "how do you know it was God and not the devil who did the healing (classic JW argument). But I think there is room for certain experiences of other people having an impact on people's beliefs. If I saw someone raise the dead (no, I haven't seen that lately) that would communicate something to me, not what it feels like to be raised from the dead, but the implications flowing from that and how that might alter my beliefs, especially if I didn't believe in that stuff before. I think we're spinning in circles here.