Jonty, I think it was more than just a need to mature. I just asked my husband if, at 14, he would have ever considered molesting his sister. He gave me a horrified look and asked if I’d lost my mind.
I think getting mixed-up in the Gothard cult helped bring it on.
That could very well be. However, some people who are raised in healthy households, who are getting emotionally fed, will not be subject to this kind of temptation. Sexual sins, on the part of males, is an indication of a person who isn’t being emotionally fed.
If he hasn’t done anything in the past 13 years, he’s probably developed enough that this isn’t much a temptation any more.