Who claims he is smarter than GOD?

I'm new here and I've read tons of posts and support information but has anyone had an N claim that he was smarter than God? Mine did, towards the end of our 21 year relationship. It really scared me and still does. Who says that? he truly believed it and kept trying to prove it . He also admitted that he uses compliments and words to get what he wants out of people, especially me. Was this just to hurt me?

He also claimed that he couldn't tell the difference between the truth and a lie. I video taped him once and asked the same question for two hours. I asked do you know the difference between the truth and a lie? his answer was different every time.

His therapist told me that I would have to assume that everything he ever told me was a lie. That means that half of my life was a lie.

What kind of sickness is this? Anyone?