Did the ancient Greeks consider their deities to be omniscient? Hence does Greek mythology claim to be the definite truth like other religions often do and might this leave more room to question and even apostatize?
2I think omniscience is something mainly associated with the Abrahamic the Dharmic faiths, not pagan folk mythologies. The stories involving gods even Zeus being tricked show this is not an inherent trait for gods in Greek mythologies. That said, it seems to me your follow-on questions are more history than mythology, and Greek paganism was not organised / exclusive to such an extent as having apostasy.– Semaphore ♦Jan 15, 2018 at 12:38
1Your linkage of "an omniscient deity" to a "claim to be the definite truth" seems really suspect. Can you support it?– SpencerJan 17, 2018 at 12:21
1Great question. When speaking of knowing or objective truth, we think not of the mythopoesis of Greek mythology, but of Greek philosophy (Socrates, Plato, Aristotle, etc.) Zeus may not have been omniscient of omnipotent, but he was powerful, clever, and knew an awful lot. I'll certainly continue to consider the philosophical dimension, and see if that yields material for a formal answer.– DukeZhouJan 17, 2018 at 18:41
Not even close.
This can be shown by, for example:
Hephaestus only discovered Aphrodite and Ares affair after Helius saw it and told him. Then Ares and Aphrodite had no foreknowledge of the net trap: https://aquileana.wordpress.com/2014/10/02/greek-mythology-aphrodite-hephaestus-ares-and-her-other-lovers/ Similarly, Hera is fooled by zeus pretending to be a cuckoo, and doesn't find out about his many children (at least for a while)
Prometheus tricked Zeus by hiding meat inside an animal stomach, and bull bones in glistening fat. Zeus chose the wrong one. (Allowing for the fact Hesiod implied Zeus knew, "in mainstream versions of the story Zeus was actually deceived, and that Hesiod is trying to be pious by changing the story to make Zeus look better" http://blog.world-mysteries.com/science/the-prometheus-myth/ https://en.wikipedia.org/wiki/Trick_at_Mecone
Thetis didn't realise Achilles vulnerability after dipping him in the Styx https://www.greekmythology.com/Myths/The_Myths/Trojan_War/trojan_war.html
Kallisto manages to hide her affair with Zeus from both Hera and Artemis, at least until she became too pregnant for it to be obvious: http://www.theoi.com/Olympios/ZeusLoves3.html#Kallisto
Poseidon doesn't spot odysseus after leaving Calypso's island for 18 days, when he spots him on his way home: http://www.sparknotes.com/lit/odyssey/section3.rhtml
You can find a lot of other examples, of course but the gods don't appear to have anything approaching omniscience.
The Fates are omniscient. Clotho spun the tread of fate. Lachesis measured it. Atropos cut it. All the while observing the would and knowing every thing between the three of them. Except what would happen to themselves, for Apollo, as a mortal, got them drunk and forced them to tell him how his human master could avoid his fate.
The Graeae could be considered all knowing as well. They knew the three items needed to kill Medusa and where they were. But, they could not see the Perseus would take their eye and tooth.
I realize the Fate nor the Graeae are gods.