I just want to say that I agree with all of Confused's points. (Since confused's screen name tends to undermine her authority, I thought I should back her up LOL ) Even if we are making inaccurate assumptions, there are a number of red flags in the history you give and I would take it very seriously. Counseling in a safe place is important.
I was thinking about what you said, "In fact, when he came to his conclusion of the "meaninglessness" of life, he began to say, "Why couldn't God just bring me home to Him now that I've accepted Him?'" It started to make me nervous--this could be interpreted as a pre-suicidal thought. I don't know him and I don't know exactly what context it was said in. But in my line of work, I have been taught that it is better to overreact that underreact.
