Yes, it is all unbelievable. I recall in my early church daze before I was fully sucked into this nonsense how it got to me. Praying with the pastor's son I decided that if I stepped over a certain crack in the floor the Devil would kill me. (True story.) The pastor showed up and told his son to continue praying with me and he would go pray with those other people. What was all this crap? IDK. Maybe step on a crack and break your mother's back. That might be where it came from. It's easy to see how I went on to study for the ministry. It started with fear but I had to know everything. Years later I discovered that none of us know everything. If this helps you maybe you should try telling your children not to let your friend scare them. If they ask what you mean just repeat it again and then drop the subject.