Final answer:
The oracle predicted that Psyche would marry a feared being that is neither god nor mortal, a prophecy that led to her union with Cupid. Oracles played a pivotal role in Greek tales, such as Oedipus's story where he is told by the Oracle of Delphi that he would kill his father and marry his mother.
Step-by-step explanation:
The oracle foretold a rather bleak and foreboding future for Psyche indicating that she would be betrothed to a creature that is neither god nor mortal, but instead a being that instills fear in both gods and mortals alike. This creature was a mystery and the prophecy stated that Psyche would be set on a mountaintop, from where this feared creature would come and make her his wife. This prophecy caused great concern to her family and led to a series of events that unfold in the myth of Psyche and Cupid, a story that links human emotion and experience to the capricious nature of the gods.
The concern around oracles and prophecies is a common theme in Greek mythology, as seen in tales like that of Oedipus, where the oracle's words set the stage for the tragic events that follow. For example, Oedipus was told by the Oracle of Delphi that he would kill his father and marry his mother, a prophecy that he desperately tried to avoid but ultimately fulfilled.