MegaDave-
The only insight I have to offer into your situation is to recount my own.
I grew up in New England, where I was confronted as early as age seven by my classmates regarding my religious beliefs. At the time they were married, my mother was an ex-Mormon and my father an ex-Christian Scientist. I was raised without any concept of God (in fact was trained to treat the concept with disdain) and only encountered religion directly when I visited my grandparents on weekends. Being raised to be a contemptual atheist is not the best plan, given that the kid has to spend their whole life interacting with people who belive fervently in their religion.
(Freaky: some bible pushers just came to my door. See my point?)
Anyhoo, I was sitting inmy high school English class one day, feeling VERY depressed over the fact that my summer girlfriend and I were not going to be able to maintain a long-distance relationship (sigh), when suddenly I had a “bolt from the blue”. I was suddenly on top of the world, feeling very much at peace. What’s more, for the rest of the day I felt like I could “see into” people, especially people I didn’t like, suddenly understanding the workings of their personalities as though they had been laid before me on a blueprint. I have never been able to describe in words what I felt I came to understand that day. I began to develop a strange mystical ordering of the universe (I had no God, remember). This euphoria lasted for a couple of days, then faded. I believed then that it could not have come from within myself (like I knew enough to say for sure), but must have come from some outside source. Maybe someone dropped a tab of acid in my soda, who knows?
Some time later, I was dating a Christian, and we had many arguments over our religious differences. She finally talked me into reading the New Testament, to understand her point of view. From the first pages of Matthew, I realized that this person was speaking from the same euphoric place that I had dwelled in ever so briefly. I immediately converted, and fell in with a bunch of like-minded classmates, attending church, bible study sessions, the whole works.
The experience feels so right, you immediately focus on what’s wrong with the rest of the world. My family refers to this period in my life as “The two years when you never laughed”. The hardest hit was my lifelong friend, a Jew. He was very hurt by me embracing a religion that tended to reject him, and even my assurances that I was still his friend came from the sickeningly pious place of being his friend IN SPITE OF THE FACT THAT HE WAS TOTALLY WRONG. Our friendship eventually survived this ordeal.
During this time, I found that the Christian explanation of things left me with more questions than answers. Once I entered college, I had the objectivity to realize that while I had entered Christianity to become a better person, I had become only insufferable. I went from being a “born-again Christian” to a “dead-again Atheist” after much reflection.
Since then I have had a number of experiences for which I have no explanation (such as people coming to my door wanting to discuss the bible just as I’m sitting here writing this). I have moderated my position to the point where I consider myself an agnostic, in the original sense of the term, which is “One who does not claim to know”. I find that those who do claim to have all the metaphysical answers are usually deluding themselves about some aspect of the world that does not fit with their beliefs.
We have moments in our lives when the universe suddely seems to fall into place. I think we need these moments to keep ourselves comforted in the face of uncertainty. My guess is your friend believes he has found the solutions to some unanswered questions in his new religious pursuits. He may in fact find those answers, or he may come to think, as I did, that sometimes it’s better to remain open-minded.
Good luck.