Fëanor, upon learning of his father's murder and the theft of his prized Silmarils, named Melkor "Morgoth", or "Black Foe of the World" (literally "Black Enemy"). Fëanor delivered the most impassioned speech ever given in Arda, which he unwittingly filled with Morgoth's corruption. He railed against the Great Enemy, but because of Morgoth's influence, he also blamed the Valar for Morgoth's deeds. He persuaded most of his people that because the Valar had abandoned them, the Noldor must follow him to Middle-earth to wrest the Silmarils back from Morgoth and avenge Finwë. He declared that even if the Noldor ever managed to recover the Silmarils, he would never give them to the Valar to help recreate the Two Trees. Together with his seven sons, they swore the Oath of Fëanor as follows: