Lily Potter’s sacrifice was what saved baby Harry Potter from being killed by Lord Voldemort, but why didn’t James Potter’s sacrifice save her and Harry? Back in 1997, J.K. Rowling introduced readers to the Wizarding World in her debut novel Harry Potter and the Philosopher’s Stone, the first entry in a series of seven books that followed the story of “The Boy Who Lived” and his battle against Lord Voldemort, the darkest wizard of all. Voldemort had dangerous plans for the Muggle and Wizarding Worlds, as well as a personal vendetta against Harry Potter.

Voldemort wanted to be the most powerful wizard and also an immortal one, but due to his dangerous ideas and plans, many wizards tried to stop him, with most of them having tragic ends. Due to a prophecy that spoke of a boy who would stop him, Voldemort set out to kill Harry Potter when he was a baby, but this didn’t go as planned for him. Voldemort killed Harry’s parents, but the Killing Curse rebounded when cast on Harry and obliterated Voldemort’s body, and it took him many years to get his body and full power back. Harry Potter famously survived Voldemort’s attack due to his mother’s sacrifice, which raised the question of why James Potter’s death didn’t save Lily and Harry, and it’s all because it wasn’t the type of sacrifice needed for the protection charm.

Related: Every Time Harry Potter Used Unforgivable Curses (& Why Not Avada Kedavra)

How Sacrificial Protection Works In The Wizarding World

James and Lily Potter in Harry Potter

Sacrificial protection is an ancient, powerful, and long-lasting charm in the Harry Potter universe that happens when one person sacrifices their own like willingly and out of pure love to save the life of one or more people – as such, it’s regarded by many as “the ultimate protection”. This is exactly what Lily Potter did when Lord Voldemort arrived at Godric’s Hollow with the purpose of killing baby Harry Potter. Voldemort first killed James Potter, and when he got to Lily and Harry, he gave Lily the chance to step aside as he promised Severus Snape he wouldn’t kill her unless she got in his way, which she did. Lily’s conscious refusal and willingness to die to protect her son made way for sacrificial protection, and so Voldemort couldn’t kill Harry Potter, leaving him only with a lightning-shaped scar on his forehead.

Now, this has made the audience question why James Potter’s death didn’t protect his family, and the answer is simple: he was determined to fight Voldemort, knowing well that he could be killed, and the Dark Lord never asked him to step aside. Although James Potter definitely sacrificed his life trying to keep his family safe, the key here is that he wasn’t given a choice to live, unlike what happened with Lily, and having the option to live but the victim consciously and willingly choosing death is what makes sacrificial protection happen.

How Lily’s Sacrifice Continued To Protect Harry Potter

Voldemort Casts a Spell in Harry Potter and the Deathly Hallows: Part Two

Lily’s sacrifice not only saved Harry Potter on that tragic night, but it continued to protect him for many, many years. After the sacrifice, the protection lived on in the beneficiary’s veins, and in Harry’s case, it continued to protect him even when his blood was used to bring Voldemort back. This ended up unintentionally tethering Harry Potter to life, allowing the young wizard to survive being hit by the Killing Curse a second time, as seen in Harry Potter and the Deathly Hallows. Because of all this, it’s mentioned many times throughout the Harry Potter books and movies that Lily’s sacrifice made way for the most powerful magic there could be, so much so that it continued to protect Harry Potter his whole life.

Next: Harry Potter: How Old Were Lily & James When They Died?