A tenant of most modern religions that I'm familiar with is that the belief in the religion informs your personal morals, and as a result you life philosophy and actions. Certainly early Christian and pre-christian Jewish writings seem to imply that has always been the norm for that religious tradition.
When I read Greek and early Roman literature pre-constatine, I get the feeling that their religion permitted you to have any type of life philosophy and morals and that would make you a good, or a bad person, but was not informed by the way the actions are perceived by the gods.
I can't seem to find any literature that invokes the gods as a form of moral control - only arguments about the general goodness or rightness of a persons particular moral philosophy.
Many Greek tales, similar to the parables, would serve to guide the moral compass of society eg. Sisyphus, Oedipus, narcissus.
The gods sometimes took action when affronted eg the flood myth of Zeus punishing mankind for cannibalism.
Ares among Greeks had a darker reputation but was still the spirit of victory so tacitly worshipped were as Athena was the more noble side of war fare thus the Greeks could distinguish the morality of their own gods.
Of course as you can tell reading the Iliad, the Greek gods could be capricious. There are also some later Greek philosophies such a deism which surmised gods acted regardless of what humans did etc. ( maybe have the name wrong, neopythaorianism?)
Mars was less “rabid” than ares in the Roman tradition. Though the Romans still would have similar moral guidances to the Greeks despite the differences.
Romans were often guided by their virtures eg. veritas or comitas etc. Some named for the gods eg. Veritas was goddess of truth.
You could also argue that morals are inherent to humans as Richard Dawkins argued in god delusion.