Comment by indoordin0saur

It's interesting that in religion back then they took the idea of the gods' existence as an obvious fact. So when they encountered other people with different gods they assumed that they were actually the same gods, just by different names. If they encountered civilized/intelligent people with different mythologies it meant either that those people knew something the Greeks previously didn't or they had just gotten events confused and it would become a matter of debate. It was more like two people with different, but honest, accounts of an event in the remote past trying to reconcile their own limited recollection or view point.