From our vantage point, removed by much time and great distance, we can tend to relegate idolatry to what we know of the remnants of Greek mythology; quaint and fairly harmless at this point. Yet in its roots lie the very human tendency to worship the past, raise to doctrine the dogmas of men, and constrain God to something we can hold in our hands, understand, and control.
The Ten Commandments weren't issued with an expiration date nor the suggestion that any of them might not be highly relevant at some future time. So how does "Thou shalt have no other gods before me" and "Thou shalt not make any graven image" apply today? And how might we be just as blind as those Paul derided on Mars' Hill?