I'm not saying there isn't a God and when I die if I do find myself having my soul judged I'd hope that a God of love would rise me up or cast me down on how I treated others. I think people who claim they know with 100% certainty that there is no God are deluded.
But, if God said "You can't come into heaven because you foolishly used the brain I gave you to logically conclude there was no evidence for the existence of me" then God would be a capricious SOB to put it mildly (Joking no offence).