Translation of a passge from The Silmarillion, inspired by this post: https://plus.google.com/100392065433715432636/posts/fBozgQ4q5gg by +Jeremiah Burns 

"Tears unnumbered ye shall shed; and the Valar will fence Valinor against you, and shut you out, so that not even the echo of your lamentation shall pass over the mountains. On the House of Fëanor the wrath of the Valar lieth from the West unto the uttermost East, and upon all that will follow them it shall be laid also. Their Oath shall drive them, and yet betray them, and ever snatch away the very treasures that they have sworn to pursue. To evil end shall all things turn that they begin well; and by treason of kin unto kin, and the fear of treason, shall this come to pass. The Dispossessed shall they be for ever.

Ye have spilled the blood of your kindred unrighteously and have stained the land of Aman. For blood ye shall render blood, and beyond Aman ye shall dwell in Death's shadow. For though Eru appointed to you to die not in Ea, and no sickness may assail you, yet slain ye may be, and slain ye shall be: by weapon and by torment and by grief; and your houseless spirits shall come then to Mandos. There long shall ye abide and yearn for your bodies, and find little pity though all whom ye have slain should entreat for you. And those that endure in Middle-earth and come not to Mandos shall grow weary of the world as with a great burden, and shall wane, and become as shadows of regret before the younger race that cometh after. The Valar have spoken."
 
Nier unótime vintuvalye; ar i Valar Valinóre yoruvar lyello, ar *etholtuvantel, yé laume i láma nainielyo or i oronti languva. I Valaron rúse caita Feanáro nossenna Andúnello Rómeo mettanna, ta caituvas illinnar i te hilyuvar. Vandantya te niruva, ta ananta te hehtuva[1], ar i imye harwi ye *vestanente roita mapuva télo voro. Ilya ya horyuvar care mai, teluva úmara[2]; ar *avartalénen nosseo nosseva, ar *avartaleo þossenen sa tuluva. Nauvante Etyangoldi[3] tennoio.
 
 
*Ettuncielye nosselyaron serce *avasanya ar Amano nóre vahtanelye. Antuvalye serce rá serce, ar maruvalye mi Nurúva huine Amano pella. An yas Eru valane i lá effiruvalye mi Ea, ar live lá lantuva lyenna, ananta lye *nahtime ar nauvalye nahtane: lo carma, lo nwalme, lo nyére; ta coalóre fealyar Mandonna tuluvar. Ananda tanome maruvalye ar hroalyain milyuvalye, ar camuvalye pia apsénie, mal cenai illi i anahtielye arcuvar rá elye. Ar te i Endórese termaruvar ar lá tuluvar Mandonna yeryuvar ambarénen ve taura cólonen, ar queluvar, ar nauvar ve nainiéva lumba epe i vinya nosse ya hilya.
Valar avalier.

[1] although I use the neologism *avarta(le) 'betray(al)' later in the text, I decided to stick to an attested verb here
[2] used here adverbially
[3] heceldi looked closer to the mark but that word is said to be used for Elves who remained in Beleriand

*etholta- 'shut out, close out'
*vesta- 'pledge, swear' (this gloss was deleted by Tolkien
avartale 'betrayal' WAR-; cf. EN *awarth
*ettuc- 'draw out, bring out, spill'
*avasanya 'unlawful'
*nahtima 'killable, can be slain'