The Argument from Personal Experience

The argument from personal experience is used by most apologists from Ray Comfort to William Lane Craig. Craig says "Of course, ever since my conversion, I believed in the resurrection of Jesus on the basis of my personal experience, and I still think this experiential approach to the resurrection is a perfectly valid way to knowing that Christ has risen. It’s the way that most Christians today know that Jesus is risen and alive."

The problem for such apologeticists is show how the believer can critically determine when the personal experience she has with God is accurately reflecting the wishes of God, and not those of a hallucination brought on by drugs, delusion, psychosis or social alienation.

Is there any reliable way for believers to warn off people like Andrea Yates, Dena Schlosser or Seung Hi Cho? If there is, why don't apologists include this sort of caveat when talking about the argument from personal experience?

It seems to me that believers and nonbelievers alike have an immense interest in the cessation of religiously motivated killings. I have heard of many ecumenical councils that brought together disparate leaders of many faiths. The most recent one I recall was in Jerusalem, where leaders of Islam, Christianity and Judaism got together to denounce homosexuality. Yet as far as I know, believers have never even discussed the development of a reliable universal method to prevent deluded believers from killing someone.