Kind of amusing, in a sad way. It seems likely that this is "trust" based on purely emotional and illogical terms, not based on observation and analysis. Perhaps my experience is atypical, but the biggest betrayals I've seen have always been from highly "devout" people. They are the ones who lie cheat and steal. They are also the most intolerant and hateful. The polluters and litterers. The most aggressive drivers. The ones who bomb buildings and kill people. What's wrong with this picture?
This doesn't mean that being religious implies being evil. But there is a strong correlation the other way: monstruous actions can often be attributed to "religious" people.
Brain damage, is all it is. It was a successful adaptation eons ago, but it's time we found a cure for religion.