On a recent visit to Phnom Penh, my wife and I toured Tuong Sleng Prison, where Pol Pot held his recent arrestees before they were sent off to the killing fields. At Tuong Sleng, these prisoners were systematically tortured by the Khmer Rouge in an effort to extract more names of resisters. The prison, and its artifacts, were grim reminders of how utterly evil human beings can become.
In these five lines of evidence, you may note a trend from objective toward subjective. I could add many additional evidences, but they would continue to be more and more subjective, more personal, more experiential. In truth, these experiences of a personal God who is involved in my life serve to verify my belief more than the objective evidences offered here. But I recognize that they will have less value as evidence for my readers, and hence I omit them. I sometimes appeal to the following analogy: I could never prove to a doubter that my wife loves me. I can offer no objective evidence. There is nothing in our relationship that could qualify as empirical proof of her love. And yet, I am as certain of her love as I am of almost anything else. Likewise, for myself and many other believers, God has made himself so real that our certainty approaches absolute knowledge, though we could never bring this certainty to bear upon another.