Board Thread:Lore/@comment-25994755-20150330232718/@comment-26116279-20150330233244

the elves first awoke around cuivenen in time of the trees, and the elves off gondolin made weapons that hated evil things and were able to sense them though that is never really explained.

2 sources that might help some: the books of lost tales (if you are brave), and the book of unfinished tales.