It ’s not immediately decipherable why cutting off the One Ring efficaciously destroys Sauron inThe Lord of the Rings .   The premise ofThe Lord of the Ringshinges on the fact that the One Ring needs to be destroyed to defeat Sauron once and for all . The Fellowship , and subsequently Frodo ( Elijah Wood ) and Sam ( Sean Astin ) alone , set out ona journeying to Mordor to shake off the Ringinto the blast of Mount Doom and thus end Sauron ’s threat to Middle - earth . At the very start of Peter Jackson ’s trilogy , however , another minute is revealed in which Sauron seems to have been destroyed , only by having the Ring cut off his finger .

The Lord of the Rings : The Fellowship of the Ringbegins with a prologue , explaining the chronicle behind the Rings of Power . Three were preserve by the Elves , seven were give to the Dwarf - lords , and nine were given to the race of Men . Sauron forged one final closed chain , the One Ring , to enhance his power and drill ascendency over the other Rings . Theprologue inThe Fellowship of the Ringrecreates the last battle of the War of the Last Alliance , which read Isildur ( Aragorn ’s antecedent ) cut off the ring from Sauron ’s script , and Sauron is seemingly destroyed . Isildur ultimately fell to the One Ring ’s power , which corrupted him and led to his death . The Ring was afterward stolen by Smeagol ( Andy Serkis ) before it made its way of life to Bilbo ( Ian Holm ) and eventually to Frodo , who became the last ring - bearer .

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The prologue , as tell by Galadriel ( Cate Blanchett ) , states that“ … into this Ring , he poured his cruelty , his malevolency , and his will to rule all living . One Ring to rule them all . ”The reason that being cut off from the Ring nearly destroys Sauron , however , is a piffling more complex than that . The books by J.R.R. Tolkien delve deeper into what the One Ring inTheLord of the Ringsis and why Sauron ’s life history is bound to it . In parliamentary law that the One Ring was capable of exerting the influence he require it to , Sauron knew that an over-the-top amount of power would need to be stored within it .   So , to make it as potent as potential , Sauron imbued it with a substantial part of his psyche . As a result , his fate was bound to the One Ring , and if it were ever to be damaged or destroyed , Sauron ’s power and strength would be destroyed along with it . This " wipeout " is what is seen during the opening ofThe Fellowship of the Ring .

In Tolkien ’s work , the soul ( fëa ) and the body ( hröa ) are two parts that make a whole . The soulfulness is powerless without the body , and the body will die without a soul . In Sauron ’s shell , as he hue the One Ring with a significant part of his soul , his spirit would remain inMiddle - earthly concern until the Ringwas the right way destroyed . As a solvent , while cutting off the Ring did destroy Sauron ’s body , it did n’t destroy his spirit , and thus paved the direction for Sauron ’s eventual replication , even without a proper strong-arm presence . This is why his will is convey out by those who serve him inThe Lord of the Rings , like the Ring - Wraiths and Saruman .

Sauron ’s quest for power dominates much of midway - terra firma ’s account . It is his covetousness , however , that eventually result to his ultimate demolition inThe Lord of the Rings . By imbuing the One Ring with a part of his soul , Sauron seal his fate by give Middle - globe ’s heroes a way to destruct him once and for all .

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Sauron attacking Isildur in The Fellowship Of The Ring

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