Recently I wrote on Pascal's wager, which goes like this: “If there is no God and you live for Him, then when you die (and all consciousness and memory of whatever you did in your life vanishes, so whether you sin or serve all is forgotten as if it never happened), you have lost nothing. If there is a God however and you reject Him, then you will have lost everything”
Problem is of course Pascal was thinking in a totally Christian environment, so the god in his wager he assumed to be the Christian God. But Pascal's wager could work with a variety of god's without telling you which one was the right god, so you could live your life for god, but the wrong god, and you lose anyway.
And now of course it is very common for people to believe in ghosts, an afterlife, extra sensory perception and miracles with NO god. With multiple universes and dimensions with multiple conflicting laws of nature possible, they like to think anything is possible and nothing is explainable, or that everything miraculous is attributable to unknown, yet-to-be-discovered natural laws.
And that's exactly the kind of atheist I was. No arguments or rationale convinced me that there is a God and that Jesus is the only way to truly know God. I was not convinced by argumentation about fossils and floods. No, I was convinced by a spiritual revelation of God's loving presence channeled through a Christian explaining and qualifying it as in and through the name of Jesus alone. This is the kind of evidence the world needs now. They need to experience God and the gifts of His spirit directly through Christian agents who verbally qualify it as in and through the name of Jesus alone. And that is why we need revival with signs and wonders accompanying.