I think your issue is quite deeper than that. Even if God revealed Himself to all humanity or more than one person, there would still be disbelievers. Humans were created that way, and God knows that obviously. We are inherently obtuse creatures when it comes to belief.<p>How many people should God reveal Himself to in order for others to believe in His existence? 2? 10? 10000? Would people still believe that revelation 100 years later? 1000 years later? How would the revelation take place? God just appears in the sky? Or personally to every human?<p>Keep in mind that exposure to a supernatural being is a difficult thing to handle for our tiny brains. Or perhaps it flies over our heads, like when you stand among a group of ants.<p>You might say why doesn&#x27;t God just appear regularly? That would defeat the purpose of belief. It would be too easy then. Furthermore, I&#x27;d wager that we would not have developed as a species. Why try to understand the orbits of the planets when God will just appear in a few weeks? Is there a point anymore?<p>I guess my point is that the &quot;why personal revelation&quot; argument is a tough nut to crack. If you believe in God, then the answer is simply God knows more. If not, you might need to approach the issue in a more rational manner, instead of just scratch the surface and then dismiss religion entirely.