Here has been my spanning thoughts on God since I was a child:In my experience, many INTP's, including Einstein (I've heard he's an ENTP... I don't think it really matters though) have eventually come to the conclusion that there is a god, but not one in the christian biblical sense who takes part in the fates of man.
Early years to 6th grade: God exists because I was raised that way, even though I believe in both Adam and Eve and evolution (i.e. Adam and Eve weren't the first but they were- double think).
6th grade: I don't believe in God because of the Holocaust. If God existed, this would not have happened. Becomes Buddhist, meditates, etc.
7th & 8th grade: I really don't know (I'll just keep meditating).
Highschool: learns about agnosticism, realizes that the only truly rational belief is that it is up in the air
College: agnostic leaning towards deist, formulates that God could exist, be he particle or some other non-sentient force. He could also be sentient, and we could all be simulated. We could be derived from aliens.
Aliens. I like that one.
Tl;dr: God is defined by me as something that is outside of our comprehension or current knowledge and understanding, be it sentient or not.