How would God reveal Himself to you?

First off: I don’t want to spark a debate here. I’m just asking a very simple question about you.

I’ve heard Jellies mention time and time again that they “haven’t seen proof for the existence of God.” Thus, they reject Him, or at least simply continue with life and hope for the best. This makes me wonder: If you’re in this situation of not seeing any proof for God, what would you consider proof? What would make you rethink your decisions? Would He have to come down and get in your face and say, “Hey, I’m God.”? Would it take being miraculously saved in a fatal situation? If He did come down and get in your face, would you brush it off as a crazy nut and continue with your life? If you were saved from a certain-death situation, would you brush it off as being lucky?

What would it take?