Ever since the start of the series, fans have been curious about why Voldemort killed Harry Potter's parents. When we first meet Harry, he's an orphan with that famous lightning scar, stuck living with his awful relatives. The reason behind it all is pretty straightforward yet has its twists - Voldemort went after Lily and James Potter because of a prophecy saying a child born at the end of July could defeat the Dark Lord.
This prophecy, which Severus Snape heard by chance, set Voldemort on a path to clash with the Potter family. Even though James was a pure-blood wizard, Voldemort saw anyone who blocked him from getting rid of the kid as a threat to his power and immortality. When Lily stood her ground instead of backing down, sacrificing herself, she unknowingly activated some ancient magic that protected Harry and led to Voldemort's first big defeat.
Key Points
- Voldemort went after the Potters because of a prophecy that said a child born in late July could wipe him out.
- By killing Lily and James but failing to finish off Harry, Voldemort unintentionally made his biggest enemy and the key to his own defeat.
- Lily's sacrifice created a powerful shield of love, the one thing Voldemort never got or valued.
The Prophecy and Why It Matters
The prophecy about Voldemort's downfall was the spark that ignited the murder of Harry Potter's parents and shaped the whole wizarding conflict. This prediction, made during a job interview, would end up sealing the fate of two families and drive the dark wizard's madness to erase a child.
Sybill Trelawney's Prediction
While having a job chat with Professor Dumbledore at the Hog's Head Inn, Sybill Trelawney unexpectedly went into a trance and shared a prophecy about Voldemort's possible defeat. She foretold that a boy born at the end of July to parents who had "defied" Voldemort three times had the power to take him down.
Unfortunately, a Death Eater (who turned out to be Severus Snape) overheard part of this prophecy before being caught. He shared what he caught with Voldemort, setting off a chain of tragic events.
The prophecy said that "neither can live while the other survives," creating a bond between Voldemort and his chosen enemy that would shape their story forever.
The Chosen One: Harry or Neville?
The prophecy could have been true for two babies born in late July 1980: Harry Potter and Neville Longbottom. Both boys' parents had faced Voldemort three times and lived to tell the tale.
Voldemort decided to go after Harry, thinking he was the bigger threat. This choice wasn’t random - Voldemort saw a bit of himself in Harry, a half-blood like him, unlike pure-blood Neville. This marking Harry as his equal ironically fulfilled part of the prophecy.
When Voldemort showed up at Godric's Hollow to kill Harry, he ended up killing James and Lily Potter as they tried to shield their son. Lily's sacrifice triggered powerful magic that caused Voldemort's killing curse to backfire, flooring him temporarily.
Voldemort's Hunger for Power and Immortality
Tom Riddle turned into Lord Voldemort through his obsessive need for power and his deep fear of dying. His journey to becoming the most feared dark wizard involved breaking his soul and creating dangerous dark objects.
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The Dark Lord's Rise
Tom Riddle kicked things off as a brilliant but troubled student at Hogwarts. His amazing magical skills were only matched by his ambition and obsession with the dark arts.
As a young man, he got caught up in his magical family history as the heir of Slytherin, which gave him a sense of superiority over pure-blood wizards.
After leaving Hogwarts, Riddle dove headfirst into dark magic, transforming completely into Voldemort. His looks became snake-like, mirroring the corruption of his essence.
The Dark Lord gathered followers called Death Eaters who shared his views on wizard supremacy. You might remember that Voldemort typically only killed wizards and witches if they were in his way - just like Harry's parents.
Horcruxes: The Key to Voldemort's Survival
Voldemort's biggest fear was dying. To gain immortality, he created Horcruxes - objects that hold bits of his soul, allowing him to live on even if his body was gone.
Making a Horcrux needs murder, which tears apart the soul. Voldemort split his soul seven times, more than any dark wizard has done.
His Horcruxes were:
- Tom Riddle's diary
- Marvolo Gaunt's ring
- Slytherin's locket
- Hufflepuff's cup
- Ravenclaw's diadem
- Nagini (his snake)
- Harry Potter (by accident)
This web of dark magic let Voldemort survive his first battle with baby Harry. When his killing curse bounced back, his body was destroyed but his soul was still connected to the living world.
The prophecy that drew Voldemort to the Potters intertwined with his desire for immortality, leading to a grudge that ultimately led to his downfall.
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The Night at Godric's Hollow
The heartbreaking events of October 31, 1981 changed the wizarding world forever when Voldemort attacked the Potter family in their home. This night kicked off everything that would later shape Harry Potter's life.
The Potters' Safe Haven
James and Lily Potter picked Godric's Hollow as their hiding spot when they went underground with baby Harry. This village had a rich wizarding history, making it a meaningful place for the young family.
To stay safe from Voldemort, the Potters used the powerful Fidelius Charm, a tricky spell that hides a secret inside one person's soul. This "Secret-Keeper" was the only one who could share their location.
At first, James wanted his good buddy Sirius Black to be their Secret-Keeper. But they switched at the last moment to a less obvious choice, thinking it would keep them safer. This ended up being a big mistake.
The charm was set up just a week before the attack, giving the Potters a false feeling of safety in their cottage.
The Betrayal by Peter Pettigrew
Peter Pettigrew, once a loyal friend of the Potters, became their Secret-Keeper but betrayed them to Voldemort. Unbeknownst to James and Lily, Pettigrew had already sold out to the dark side.
After becoming the Secret-Keeper, Pettigrew didn't waste time. He quickly told Voldemort where the Potters were hiding, who had been searching for them thanks to that prophecy about a child who could defeat him.
On Halloween night, Voldemort showed up at the Potters' home. James tried to put up a fight without his wand, trying to buy some time for Lily and Harry to escape. Voldemort killed him with the Avada Kedavra curse.
Lily ran upstairs with baby Harry but was trapped. She refused to step aside, choosing instead to sacrifice herself to shield her son. Her love tapped into a powerful old magic that ultimately saved Harry and marked the start of Voldemort's decline.
The Magic of Love and Sacrifice
Love turned out to be the most magical force in Harry Potter's tale. Lily Potter's sacrifice created a shield so strong it defeated the darkest wizard ever and saved her son's life.
Lily Potter's Sacrifice
When Voldemort came to Godric's Hollow that fateful Halloween night, he gave Lily Potter a choice: step aside and let him kill Harry or die herself. Lily chose to give up her life for her son.
This move wasn’t just brave—it was magically meaningful. Her sacrifice formed an ancient magic bond that protected Harry from Voldemort's death curse.
The protective magic flowed from Lily's unconditional love. When faced with death, she didn’t hold back, willing to lay down her life for Harry's sake. This selfless act used powerful old magic that Voldemort, who never grasped what love meant, completely missed.
You can see how this protection worked when the killing curse bounced back. Instead of killing Harry, it left a lightning-bolt scar on him while smashing Voldemort's body to bits.

The Story of Harry's Survival
Harry surviving created waves through the wizarding community. You might've heard him called "The Boy Who Lived"—a nickname that stuck with him.
This wasn’t just a stroke of luck. The sacrificial shield from Lily kept Harry safe throughout his childhood and beyond. It meant Voldemort couldn't touch him without feeling intense pain.
The magic lived in Harry's blood. This made for a unique connection that turned out to be super important:
- It forced Voldemort to use Harry's blood in his resurrection
- It tied Harry to life when Voldemort tried to kill him in the Forbidden Forest
- It showed that love's power goes beyond death
Harry's lightning scar became a symbol of his mother's love and a constant reminder of the endless fight between good and evil.