How does an atheist become a Christian? Lee Strobel describes his conversion in the following way.
My wife’s conversion to Christianity (which deeply troubled me at first) resulted in a lot of positive changes in her attitudes and behavior, which I found winsome and intriguing. She invited me to a church, where I heard the Gospel explained in a way I could understand it. While I didn’t believe it, I realized that if it were true, it would have big implications for my life. So I decided to use my journalism experience and legal expertise (at the time, I was legal editor of The Chicago Tribune) to investigate whether there was any credibility to Christianity or any other faith system.
For nearly two years, I investigated science, philosophy, and history. I read literature (both pro and con), quizzed experts, and studied archaeology. On November 8th, 1981, alone in my room, I took a yellow legal pad and began summarizing the evidence I had encountered. In light of the scientific evidence that points toward a Creator and the historical evidence for the resurrection of Jesus, I came to the conclusion that it would have required more faith for me to maintain my atheism than to become a Christian.
Essentially, I realized that to stay an atheist, I would have to believe that nothing produces everything; non-life produces life; randomness produces fine-tuning; chaos produces information; unconsciousness produces consciousness; and non-reason produces reason. Those leaps of faith were simply too big for me to take, especially in light of the affirmative case for God’s existence and Jesus’ resurrection (and, hence, his divinity). In other words, in my assessment the Christian worldview accounted for the totality of the evidence much better than the atheistic worldview. (http://goo.gl/RMldnH)