After he saw the inscription on the ring; Gandalf told Frodo that the ring that Frodo possesses is the Master ring; the One Ring who have power over the every other magic rings. He got the idea to put the ring on fire after he went to Gondor and read the Isildur’s scroll to find the truth about the ring. He remembered the word of Saruman concerning the ring, “The Nine, the Seven, and the Three had each their proper gem. Not so the One. It was round and unadorned, as it were one of the lesser rings; but its maker set marks upon it that the skilled, maybe, could still see and read.” (Tolkien 252) Gandalf was then concerned that Sauron the great, the Dark Lord has returned, and he needs the One Ring, the one that will give him strength and knowledge;