§ Of the Coming of the Elves and the Captivity of Melkor The Silmarillion

Then Manwë said to the Valar: 'This is the counsel of Ilúvatar in my heart: that we should take up again the mastery of Arda, at whatsoever cost, and deliver the Quendi from the shadow of Melkor.' Then Tulkas was glad; but Aulë was grieved, foreboding the hurts of the world that must come of that strife. But the Valar made ready and came forth from Aman in strength of war, resolving to assault the fortresses of Melkor and make an end. Never did Melkor forget that this war was made for the sake of the Elves, and that they were the cause of his downfall. Yet they had no part in those deeds, and they know little of the riding of the might of the West against the North in the beginning of their days.