The Valar and Eldar now fully understood the extent of Melkor's treachery. 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"). Now King of the Ñoldor, Fëanor delivered the most impassioned speech ever given in Arda, which he unwittingly filled with Morgoth's taint. He railed against the Great Enemy, but because of Morgoth's influence, he also blamed the Valar for Morgoth's deeds. He persuaded most his people that because the Valar had abandoned them, the Ñoldor must follow him to Middle-earth and fight Morgoth. Fëanor then swore the terrible Oath of Fëanor which all seven of his sons also proclaimed, vowing to fight anyone and everyone — whether Elf, Man, Maia, or Valar — who with