We are only the latest group of people to discover a little bit about who God is. And we won't be the last people to do it, either. And it isn't even something which we can restrict just to the human race. It's the sense that God comes before everything else. And God will outlast everything which we can imagine.
Some people find thoughts like that frightening.
They feel that anything, or anyone, which begins beyond our imagination, and which lasts beyond our imagination, is something to fear and to be afraid of. And maybe they're right. Maybe God is pretty scary. Or maybe what's scary is the discovery of our own true size. It's pretty small.