Silent I know you are experiencing a little shock right now. Take it from a person who went through something similar. A few years after my Dad dies I found out I may have a half brother living somewhere. He had a affair with one one his employees back in the 60's. I also found out that is why we moved from central IL to FL in 1970.
My father was what you would call a super elder. He loved talking about the evils of fornication and adultery. Everyone in the local congregations thought he was great guy. So when deep family secrets come out it is usually the children who learn of it last.
I learned our parents are just human, just like us no matter what the cult trys to convince us of otherwise. All parents have secrets they don't want their kids to find out. You just came across some accidentally. Reflect on what you have learned and remember they was bamboozled by a cult and angry about it. I hope this helps you. Take care. Still Totally ADD