A few words about myself, after beeing an atheist for long time, i have learned about religion and god several years now, which finally resulted in truly believing in god,
becoming 100% confident that god exists.
My point of view is there is only one almighty god, no matter what you call him.
My experience is not limited to, but including: reading books, watching documentations, talking with religious people, praying, and so on.
Can you tell why you believe that god exists? You do not hear often that an atheist becomes religious during his life as an adult. I am not trying to insult you in any way, please do not get me wrong.