When Frodo brings the one ring of power to the Last Homely House East of the Sea at the request of Gandalf, the council who are summoned there at Rivendell are thrust into a terrible and difficult choice. Now that the ring has surfaced, they have no choice but to try to destroy this dark object. But this can only be done in the fire of Mount Doom, where the ring was forged. So the difficult decision lies before them of how to achieve this impossible task, and who to send as the Ring-bearer. Sometimes, within these stories, someone must be sent on an impossible quest, despite knowing the danger, and despite the fact that in all likelihood, they will never return.
This is because the ring will stop at nothing to get back to Sauron, and he will stop at nothing to find it. As Aragorn points out, no one else can wield it: “it has no other master.” The ring is cunning and deceptive. It is capable of absolute betrayal and treachery, including manipulating those around it, drawing them in, using them to commit heinous acts and then tossing them aside in favor of another who will get them one step closer to Sauron. This is shown countless times across The Hobbit and the Lord of the Rings movie adaptations as well as the original books. It abandons Gollum in the tunnels below the goblin caves; it abandons Isildur in the river as he tries to swim away from the orc attack. But if the ring is so good at escaping its wearer in order to get back to its true master, why didn’t it escape Bilbo in the 60 years between the quest for Erebor and the War of the Ring?
LOTR: Why Didn't Gollum Become The New Dark Lord?
There are three main reasons why this is the case. The first is that Bilbo is a hobbit, and as such, is particularly difficult to
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