People of faith assume that all they need to do is turn to
the divine pronouncements for to find out what they ought to be doing. Of course
if there were a god interested in the affairs of man, and this god provided clear, concise, & sensible moral
guidance, that would end our search. But if we, for example, look to the New and Old Testaments, there are numerous violations
of these standards. So poor are the moral teachings that they are a source of humor and embarrassment. Add to these the many contractions; only a fool would rely upon the bible as the source of moral teaching. Most people
of faith give the bible lip service, and rather rely upon the inner light (intuition) for moral behavior (assuming there is
a rational part of their brain that is capable of deciding what they do).
Plato, aware of this problem of relying upon divine pronouncements,
exposes its short coming in his Euthyphro.
address the issue.
It is Plato at his best.
Professor Bob Zunjic, provides an excellent analysis of the Euthyphro for his Philosophy 103 class at the university of Rhode Island.
Of course you should read Plato's work first.