Ultimately, Harry chose to promise Griphook the sword—but left out that he wouldn't give it to him until after Voldemort had been defeated (which could have been years). Harry was often regarded as one of the best wizards of the wizarding world, something that Griphook himself even acknowledged.
Griphook, impressed by Harry's respectful treatment of the house elf, agreed to help on the grounds that he would be given the real sword as payment. Harry reluctantly agreed to this demand. When their break-in was discovered, Griphook seized the real sword and ran with it.
This betrayal ultimately proved to be Griphook's own undoing, as he was murdered by Voldemort alongside the other Goblins who reported the Cup's theft to him and Griphook's death caused the Sword to vanish back into the Sorting Hat.
Griphook agreed to help Harry and his friends break into Gringott's and then break into a specific vault within the bank, namely the vault of Bellatrix Lestrange. Harry promised, for his part, to give Griphook the sword of Godric Gryffindor.
Question number one: Why didn't Dumbledore just give the sword of Gryffindor to Harry instead of leaving it to him in his will? He knew even before his death that Harry would need the sword to destroy Horcruxes, and he must have known that the Ministry would not let Harry get the sword.
Harry Potter And The Deathly Hallows Part 2 - Beach House Scene
Why was Gryffindor's sword not a Horcrux?
Since goblin metal takes in only that which makes it stronger and rejects anything that would weaken it, Gryffindor's blade couldn't have been turned into a Horcrux. Likely, the soul fragment would have been rejected, which could have seriously impacted Voldemort's plans in Harry Potter.
When Ginny Weasley, Neville Longbottom, and Luna Lovegood tried to steal the sword from the Headmaster's office, Snape gave the Sword of Gryffindor to Bellatrix Lestrange for safe keeping. Bellatrix hid the sword at Gringotts, alongside other important artifacts: mainly, the Cup of Hufflepuff.
Why didn't Hermione give Bellatrix's wand to the goblin?
They know she's an impostor. They've been warned", so obviously the request for the wand was unexpected even to him. It's thus pretty safe to conclude that the real Bellatrix had reported her wand stolen and alerted Gringotts prior to the trio's attempted break in.
Summary. Warwick Davis replaced Verne Troyer as Griphook in the Harry Potter series to ensure the character had a British voice, as per J.K. Rowling's rule of casting only British actors.
When the Boy Who Lived needed Griphook's help to break into Gringotts Wizarding Bank, the goblin demanded the sword of Gryffindor as payment. It was then that Harry learned that, according to Griphook, the sword rightfully belonged to his people, and his culture saw Gryffindor as a thief.
Throughout the history of the wizarding world, there had been rebellions where the goblins had fought against discrimination and prejudice. They were still considered subservient in the minds of most wizards, and they were forbidden by the Ministry from carrying wands, which had led to deep-seated resentment.
Malfoy is also convinced (to a certain extent) that it is Harry, but he isn't so sure, so he asks his son - Draco - if he recognises him. Unfortunately, Malfoy isn't sure of it as well, so Lucius has no evidence or confirmation that it is Harry.
In Deathly Hallows we reconnected with Griphook. He hadn't teamed up with Voldemort or betrayed anyone - he was on the run and helping Ted, Tonks's father. The goblins wouldn't bow to the so-called superiority of the wizards now in charge of Gringotts.
Honestly, Hermione knew Dobby was a lost case... nothing could have revived Dobby after the attack or she would have definitely helped Harry with Dobby considering she was the girl who started S.P.E.W(Society for the Elfish welfare) and fought for elf rights. There was nothing to be done at that point.
The goblin does not trust wizards and witches, which leads to his betrayal in Gringotts, and Griphook was bloodthirsty and relished the idea of lesser creature's pain.
Snape gave a fake sword to be put into the Lestrange vault. He did this so that he could appear to be on Voldemort's side and to give the real sword to the trio. He even left a Patronus so that the three could find out the location of the sword.
Felton reprised his role as Malfoy for the final time in Harry Potter and the Deathly Hallows – Part 1 and Harry Potter and the Deathly Hallows – Part 2.
Richard Harris initially portrayed Albus Dumbledore in the first two Harry Potter movies but was replaced due to his declining health. He tragically passed away from Hodgkin's lymphoma at the age of 72. Michael Gambon took over the role of Dumbledore and played him throughout the rest of the Harry Potter film series.
The reason why the location of the Fat Lady's portrait was changed in the third film was because the filmmakers opted not to return to Gloucester Cathedral, where the scenes for the Fat Lady in the first film were shot.
How did Bellatrix write mudblood on Hermione's arm?
In Harry Potter and the Deathly Hallows: Part 1, Bellatrix used her knife to carve the word "mudblood" into Hermione Granger's arm. The film version of the knife bears a resemblance to cross-shaped spearheads that leave a hard-to-heal wound.
Mudblood itself was a term meaning that Muggle-borns had "dirty" blood and were a big disgrace to the wizarding world, and thus had no right to be a witch/wizard and were undeserving of magic. The slur implied that the individual has "dirty blood" and was considered extremely offensive.
Because Bellatrix and the Malfoys needed to be 100% certain it was him. Even though Ron and Hermione are often seen together with Harry, the disfiguration is sufficient, initially, to instigate the caution they show in the identification.
Did Bellatrix know she had a horcrux in her vault?
At some point in time, Lord Voldemort gave Bellatrix Lestrange Hufflepuff's Cup, one of his Horcruxes, to keep safe in her vault, though he didn't tell her its true nature.
He promised to protect Draco Malfoy from harm and guide him whilst he attempted to perform the task the Dark Lord had asked him to do: to kill Albus Dumbledore. Snape was actually a double agent working for Dumbledore, who requested Snape to kill him anyway to spare him of a painful and humiliating death.
Why didn't Dumbledore tell Harry how to destroy Horcruxes?
Dumbledore Never Really Had Time To Explain How To Destroy The Horcruxes. As much as Harry would have benefited from Dumbledore's knowledge of how to destroy the remaining five horcruxes, there was simply not enough time before his death to do so.
