I’m thinking of Greek Mythology and the story about Cassandra.
The god Apollo fell in love with the human Cassandra and gave her the gift of foresight in an attempt to woo her. But she spurned him anyway, so he cursed her and made it so no one would believe her predictions.
Cassandra always knew what would happen, but no one paid attention to her. She told the Trojans about the horse — but they brought it into the city anyway.
Very interesting!
Along those lines, I once visited the pre-Christian cave of the prophetess the Sibyl of Cumae, near Naples, Italy. It was an underground hallway like a mine shaft around 50 to 60 feet long, with openings to the above-ground every couple of yards. She would sit in the center of it and speak her predictions, while groups of people sat near the openings – a natural amplification system.
Her story (at the link above) is fascinating. She tried to warn the king of what was to come, but he wouldn't buy her nine books of prophecy, so she burned some, then offered the rest at the same price. This went on until he finally paid the price for the remaining 3 books at the full price she had asked for all nine of them.