§ Of the Flight of the Noldor The Silmarillion

Then suddenly Fëanor appeared in the city and called on all to come to the high court of the King upon the summit of Túna; but the doom of banishment that had been laid upon him was not yet lifted, and he rebelled against the Valar. A great multitude gathered swiftly, therefore, to hear what he would say; and the hill and an the stairs and streets that climbed upon it were lit with the light of many torches that each one bore in hand. Fëanor was a master of words, and his tongue had great power over hearts when he would use it; and that night he made a speech before the Noldor which they ever remembered. Fierce and few were his words, and filled with anger and pride; and hearing them the Noldor were stirred to madness. His wrath and his hate were given most to Morgoth, and yet well nigh all that he said came from the very lies of Morgoth himself; but he was distraught with grief for the slaying of his father, and with anguish for the rape of the Silmarils. He claimed now the kingship of all the Noldor, since Finwë was dead, and he scorned the decrees of the Valar.