§ Of the Voyage of Eärendil and the War of Wrath The Silmarillion

Yet he yielded at last to the will of Maedhros, and they took counsel together how they should lay hands on the Silmarils. And they disguised themselves, and came in the night to the camp of Eönwë, and crept into the place where the Silmarils were guarded; and they slew the guards, and laid hands on the jewels. Then all the camp was raised against them, and they prepared to die, defending themselves until the last. But Eönwë would not permit the slaying of the sons of Fëanor; and departing unfought they fled far away. Each of them took to himself a Silmaril, for they said: 'Since one is lost to us, and but two remain, and we two alone of our brothers, so is it plain that fate would have us share the heirlooms of our father.'