There really isn't one. It's basically an argument from personal experience, and if someone claims they saw God, there's not much you can say, but "no, you didn't." But that's not going to win them over. You could probably eloquently argue that, odds are, it was just a hallucination or delusion of some kind, but, well, if you do it poorly, they won't believe you and if you do it eloquently, they really won't believe you.
Comparing the Universal Oneness of All Life to Yo Mama since 2010.
I was born with the gift of laughter and a sense the world is mad.
I was born with the gift of laughter and a sense the world is mad.