It's quite simple....
The planet we all live on is still pretty much exactly the same as it was thousands of years ago. It's us that change.
If a giant asteroid were to come crashing down to earth, we (most) wouldn't say "Oh no God is sending his wrath", we would say "Oh no a giant asteroid" because we know better.
It doesn't take a genius to figure out that all these old texts ie: the bible, are filled with events that, people back in those days, had no explanation for and thus of course it must be the wrath of a god etc.
We as a people need to wake up and start believing in each other instead of the rants and misunderstandings of our ancestors.