I don't question anybody's faith though I know those who don't believe in God are wrong about that.
Einstein wasn't a believer of a "God in us" but he was a believer in some sort of cosmic intelligence ordering and driving the entire universe. Just figuring the odds, he didn't think everything that is could just be via chance or even natural selection.
Then there are the believers in strict religious rules and dogma. Others who put far less importance on that than they do with a personal relationship with the living Christ.
But however one looks for God, I leave it up to God on how and when and by what means they will ultimately know Him. I am confident all who want that will get there especially if they don't expect to make the rules about when and how that will happen.