Of course, you can. I talk to people every day who believe that they have had special experiences that convince them that their worldview is correct, the difference being that they believe that President Bush wants them to organize a parade or that Chinese space ships are monitoring their thoughts. Their delusions are as real to them as your god is to you.
I believe that you believe, but I don’t share your beliefs, any more than I share the beliefs of the schizophrenics I talk to. Your subjective experience might be enough to convince you of its validity, but you can’t reasonably expect it to convince anyone else.