Which detail from the hobbit best to develop the theme that evil must be pushed back, regardless of one's beliefs?

The eagles come to the aid of the men, dwarves, and elves even though they do not usually get involved in the world outside of their own.

a myth is something that is told for many years that u go looking for and cant find and a truth is something that u can find in real life and can be story's of for example:

mermaid's and unicorns: u can't find them at all so they can be a myth cause u hear story's about them once u go looking for them u won't find them.

dinassours(can't spell): u hear story's about them at school by ur friends and one day ur dad takes u to a museum and u find fossils of them so u realize they are real and not fake.

yes yes it does !