Riordan Wiki

The Great Prophecy was a prediction made by the Oracle of Delphi that foretold the rise or fall of Olympus by a child of the Big Three.


The First Great Prophecy was a prophecy given by the Oracle over seventy years ago. Around World War II, when the sons of Zeus (America), Poseidon (Great Britain and the Soviet Union), and Hades (Nazi Germany, Fascist Italy, and Imperial Japan) fought each other, the Oracle foretold of a future event that would end their affairs with mortal women for the next seventy years. The prophecy is revealed in The Last Olympian, and is written in iambic tetrameter:

1.A half-blood of the eldest gods

2.Shall reach sixteen against all odds

3.And see the world in endless sleep

4.The hero's soul, cursed blade shall reap

5.A single choice shall end his days

6.Olympus to preserve or raze

The three demigods who fulfilled the prophecy: Percy, Annabeth, and Luke.

Unraveling the Prophecy

  1. Percy was a half-blood child of Poseidon , one of the eldest gods (Poseidon, Zeus and Hades), otherwise known as the Big Three .
  2. Percy reaches sixteen despite all of the numerous times he was almost killed by Luke, Kronos and his monsters.
  3. Percy finds the whole city of Manhattan asleep from Olympus so the war can go on without any of the humans interfering.
  4. When Luke and Annabeth first met, he handed her a knife with the promise that they would always be a family and be there for each other. However, when Luke betrayed the camp and the Olympians, the broken promise cursed Annabeth's knife. The blade was then used by Luke to kill himself, effectively killing Kronos.
  5. Percy had to choose between giving Annabeth's knife to Luke and allow him to destroy himself, or trying to destroy Luke himself and failing, causing Kronos to burn away Luke's body as he took on his true form. Either choice would have caused Luke to die.
  6. Percy's choice would result in the destruction of Olympus or preserving Olympus the way it is.

The Prophecy of Seven

Main article: Prophecy of Seven

After the completion of the first Great Prophecy, Rachel Elizabeth Dare took on the spirit of the Oracle of Delphi and spoke a new prophecy, which was declared by Apollo as the second Great Prophecy. This prophecy would later be known as the Prophecy of Seven as the Romans called it.

1.Seven half-bloods shall answer the call,

2.To storm or fire the world must fall.

3.An oath to keep with a final breath,

4.And foes bear arms to the Doors of Death.

Unraveling the Prophecy

  1. The first line refers to seven half-bloods that will try and save Olympus from Gaea and her powerful children, the Gigantes. The seven half-bloods are, Jason Grace, Leo Valdez, Piper McLean, Percy Jackson, Annabeth Chase, Hazel Levesque, and Frank Zhang.
  2. The second line refers to either Leo or Jason as the one who was destined to defeat Gaea. Leo, with the help of Jason, Piper, and the recently rebuilt Festus, was able to defeat Gaea using his pyrokinesis, dying in the process (although he came back to life after using the Physician's Cure).
  3. Leo, who died after defeating Gaea, was brought back to life with the use of The Physician's Cure. The explosion sent Leo and Festus (with his body rebuilt) to Ogygia, where Leo reunited with Calypso and completed the oath he made to take her out of the island.
    1. This could also be Bob's brief promise in The House of Hades to keep Percy and Annabeth safe. He and Damasen most likely died in the end, making it the "final breath".
  4. Gaea opened the Doors of Death to allow the most evil beings of the Underworld to rise again and monsters to revive quicker. During The House of Hades, Percy, Annabeth, the Titan Iapetus, and the peaceful Gigantes Damasen (with the help of his eternal foe, the Maeonian Drakon) all meet at the Doors of Death. Gigantes, Titans, and Demigods are normally enemies, but they worked together to seal the Doors of Death, preventing Gaea from reviving her forces.

The Seven

The Seven Heroes of Olympus, as officially announced in The Demigod Diaries:

The demigods of the Prophecy of Seven

Percy Jackson (film series)

Percy Jackson: Sea of Monsters

The Great Prophecy is told to Percy by the Oracle. She tells him that when a child of eldest gods reaches 20 against all odds, the prophecy will come true. Throughout the movie, it is implied that the cursed blade is Riptide.


  • The Great Prophecy never says that a child of the Big Three would be the one mentioned in the prophecy, only that it would be a child of the eldest gods. Because 'gods' can be considered a gender neutral term in some cases, this could mean that any demigod child of the original Olympians could be the one mentioned in the prophecy, including children of Demeter
    • However the term 'gods' is usually attributed to the male gods, which is why only the children of Zeus, Poseidon, and Hades are the focus of the prophecy.
    • In the Fifth Line of the prophecy, it says a single choice shall end HIS days, meaning that a male would die because of the choice.

See also

Percy Jackson and the Olympians
Core Series: The Lightning Thief | The Sea of Monsters | The Titan's Curse | The Battle of the Labyrinth | The Last Olympian
Main Characters: Percy Jackson | Grover Underwood | Annabeth Chase | Tyson | Clarisse La Rue | Thalia Grace | Nico di Angelo | Chiron | Luke Castellan | Rachel Elizabeth Dare
Secondary Characters: Sally Jackson | Travis Stoll | Connor Stoll | Mrs. O'Leary | Silena Beauregard | Charles Beckendorf | Paul Blofis | Blackjack | Zoë Nightshade | Bianca di Angelo | Juniper | Ethan Nakamura
Minor Characters: Gabe Ugliano | Frederick Chase | Michael Yew | May Castellan | Austin Lake | Kayla Knowles | Maria di Angelo | Will Solace
Olympian Gods: Zeus | Hera | Poseidon | Demeter | Ares | Athena | Apollo | Artemis | Hephaestus | Aphrodite | Hermes | Dionysus | Hades | Hestia
Minor Gods: Amphitrite | Ariadne | Hecate | Iris | Janus | Morpheus | Nemesis | Pan | Persephone | Triton
Titans: Kronos | Atlas | Calypso | Iapetus | Krios | Hyperion | Oceanus | Prometheus
Mythical Creatures: Minotaur | Centaur | Furies | Satyr | Cyclops | Manticore | Ophiotaurus | Nemean Lion | Empousa
Related Content: Rick Riordan | The Lightning Thief (film) | Sea of Monsters (film) | The Demigod Files | Demigods and Monsters | The Ultimate Guide | The Heroes of Olympus | The Trials of Apollo | Disney+ Series