Elrond told Gandalf that his sword was of elven make, and was in fact Glamdring "Foe-hammer", the ancient sword of the king of Gondolin. The relevant passage in The Hobbit is as follows: "These are not troll-make. They are old swords, very old swords of the High Elves of the West, my kin. They were made in Gondolin for the Goblin-wars. These must have come from a dragon's hoard or goblin plunder, for dragons and goblins destroyed that city many ages ago....This, Gandalf, was Glamdring, Foehammer that the king of Gondolin once wore. Keep them well!"
He learns this from Elrond, when the Company speaks with him in Rivendell.
"That day he [Elrond] looked at the swords they had brought from the trolls' lair and he said: 'These swords are not troll-make. They are old swords, very old swords of the High Elves of the West, my kin. They were made in Gondolin for the Goblin-wars.'" A Short Rest
Gandalf tells him when they find the weapons in the troll's cave. It is confirmed when he sees it glowing in the cave when near goblins.
When he is lost inside the mountain, he discovers that it glows in the presence of goblins the same way that Gandalf's and Thorin's swords do.
He knows because of the elvish glow of the blade like all blades that are made by the elves.
Elrond revealed to the Company that the swords they had taken from the trolls' lair were ancient swords made by the High Elves, or Noldor. Thorin's sword was Orcrist, "Orc Cleaver" and Gandalf's was Glamdring "Foehammer," sword of the king of Gondolin in ages past.
Here is the quote from The Hobbit 'A Short Rest'
"That day he [Elrond] looked at the swords they had brought from the trolls' lair, and he said: "These are not troll-make. They are old swords, very old swords of the High Elves of the West, my kin. They were made in Gondolin for the Goblin-wars. They must have come from a dragon's hoard or goblin plunder, for dragons and goblins destroyed that city many ages ago. This, Thorin, the runes name Orcrist, the Goblin-cleaver in the ancient tongue of Gondolin; it was a famous blade. This Gandalf, was Glamdring, Foehammer that the king of Gondolin once wore. Keep them well!"
The name of Gandalf's sword is Glamdring. The elven balde carries runes which declare it to be a "Hammer of the orcs"
Bilbo discovered that his sword Sting glowed a pale, icy blue when orcs were near.
Bilbo knows his sword was made by the Elves because Gandalf told him when he found it in the cave. Gandalf gave it to The Hobbit in case he ever needed to defend himself on his own.
The swords would glow blue when orcs were nearby. The swords were made by the elves. It was lost during the Fall of Gondolin.
What did the magic of the sword tell bilbo
Glamdring, Orcrist, and Sting are found. These blades were made by the High Elves of the First Age in Gondolin. Glamdring was the blade used by Turgon, king of Gondolin. Glamdring later became the sword used by Gandalf. Orcrist became the blade used by Thorin, and Sting was Bilbo's sword. Sting was not called Sting when it was made. Bilbo named it that after killing spiders in Mirkwood.
Floating in barrels downriver.
They take weapons, Gandalf and Thorin get their elven made swards and Bilbo finds his sword Sting. They also take the gold and silver the trolls had stolen and buried it, later on the return trip Bilbo and Gandalf retrieve it.
Sting's blade glows when goblins or orcs are nearby (the two species are technically the same).
Well, before he wasn't very adventurous and didn't want to get out of his home. But now, after his adventure on receiving gold, he felt very proud of himself and successful that he made it to the gold. And he actually gets to keep a share of it.
The elves.
In the 3rd Chapter of The Hobbit 'A Short Rest', Gandalf and Thorin show their swords to Elrond at Rivendell. He tells them they were made by the High Elves of the West. In Riddles in the Dark, Bilbo pulls out his sword and it glows in the dark. He thought it rather splendid to be wearing a sword that glowed the way Gandalf and Thorin's swords did. Bilbo's little sword, which he later gives the name 'Sting', is of the same design and has the same magic.
Glamdring, Orcrist, and Sting are found. These blades were made by the High Elves of the First Age in Gondolin. Glamdring was the blade used by Turgon, king of Gondolin. Glamdring later became the sword used by Gandalf. Orcrist became the blade used by Thorin, and Sting was Bilbo's sword. Sting was not called Sting when it was made. Bilbo named it that after killing spiders in Mirkwood.
It is an elvish blade made in Gondolin. It glows in the dark when orcs are around.
Floating in barrels downriver.
They take weapons, Gandalf and Thorin get their elven made swards and Bilbo finds his sword Sting. They also take the gold and silver the trolls had stolen and buried it, later on the return trip Bilbo and Gandalf retrieve it.
Sting's blade glows when goblins or orcs are nearby (the two species are technically the same).
Well, before he wasn't very adventurous and didn't want to get out of his home. But now, after his adventure on receiving gold, he felt very proud of himself and successful that he made it to the gold. And he actually gets to keep a share of it.
Fiction
no....
elves are not real and where made up In Anglo Saxon England as early as the 10th century.
That was the big mistake Bilbo made. There was no one to put him in it and close it up for him.