I suspect it might be something similar to the Deep Thought supercomputer subplot in the Hitchhiker's Guide; in which all the competing religions and philosophers, knowing that there really is an Ultimate Answer to be found, were kept busy for millions of years arguing about what the computer was eventually going to come up with. In this case, we would know beyond question that a god does, or at best did, exist, and so the gravy train would rumble on with arguments and debates about the god's actual nature. I further suspect it won't be an entirely bloodless process. Religions are like that, when you strip away all the fluffy, shiny window dressing and get right down to the basics.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'
