connor.
don't forget the 'sixth sense'.
Apart from religion, which is faith-based on what people are taught to believe as opposed to what they have investigated for themselves, it is possible to 'intuit' God or whatever name you want to choose to describe the all-pervading consciousness that is life itself.
Now whether or not what you intuit is actually real is the big question. Spiritual experiences can be traced back to neurological responses (the God gene) but who is to say that the condition a person finds themselves under in those circumstances, is not actually the real state that we are supposed to live in, as opposed to the unbalanced one we now call reality. Maybe the current state of humanity is not really who we are at all.
I used to diss religion. I still do when I see it causing people to behave badly. However there are those that draw comfort from it and it improves their lives, and who are we to tell them otherwise