People would like to think the 10 commandments still count, but they do not.
We have a new testament and a new covenant.
If the old testament still counts, then jews are still the only chosen people.
Muslims follow their same book more or less.
The problem most don't realize is the new testament was written 100-300+ years after Jesus had already died. It wasn't written by those that knew him.
Most of this had to be done in secret and was relayed purely verbally.
Throughout time much of our written knowledge was destroyed as most rulers would first destroy all books and kill anyone educated when they took over a place.
Stupid people are easy to control and people forget quickly when things are not written down.
The long and short of it is faith is going to be faith and there will always be atheists.
No one knows for sure and even if the 'stories' are proven wrong, that doesn't disprove God or God(s).
Also even if historically man has gotten it wrong every time, it still doesn't mean there isn't a higher power that we cannot understand nor does it mean there will never be one.