Beren and Lúthien - Changes needed

[Findegil]

Lets try another time to bring this to a good end:

But Felagund spoke ere he bade farewell:
'This I say to Celegorm the fell,
by the sight that is given me in this hour,
by neither thin nor any power
shall thy kin the Silmarils gain
before the End, all in vain
you swore. And this that we now seek
shall be delivered from the triple peak,
but never to your hands shall fall.
Nay, your oath shall devour all
the sons of Fëanor, and to other care
Lúthien’s great bride-price bear.'

I find "from" less forced than "'neath" and still think that "the sons of Fëanor" is better than "of Feanor’s sons".

Is their anything else missing in this chapter? I will try to get back into the text and the discussion and see if any point is still open.

Respectfully
Findegil