The Silmarillion

Then Manwë awoke, and he went down to Yavanna upon Ezellohar, and he sat beside her beneath the Two Trees. And Manwë said: 'O Kementári, Eru hath spoken, saying: "Do then any of the Valar suppose that I did not hear all the Song, even the least sound of the least voice? Behold! When the Children awake, then the thought of Yavanna will awake also, and it will summon spirits from afar, and they will go among the kelvar and the olvar, and some will dwell therein, and be held in reverence, and their just anger shall be feared. For a time: while the Firstborn are in their power, and while the Secondborn are young." But dost them not now remember, Kementári, that thy thought sang not always alone? Did not thy thought and mine meet also, so that we took wing together like great birds that soar above the clouds? That also shall come to be by the heed of Ilúvatar, and before the Children awake there shall go forth with wings like the wind the Eagles of the Lords of the West.'

Then Yavanna was glad, and she stood up, reaching her arms towards the heavens, and she said: 'High shall climb the trees of Kementári, that the Eagles of the King may house therein!'

But Manwë rose also, and it seemed that he stood to such a height that his voice came down to Yavanna as from the paths of the winds.

'Nay,' he said, 'only the trees of Aulë will be tall enough. In the mountains the Eagles shall house, and hear the voices of those who call upon us. But in the forests shall walk the Shepherds of the Trees.'

Then Manwë and Yavanna parted for that time, and Yavanna returned to Aulë; and he was in his smithy, pouring molten metal into a mould. 'Eru is bountiful,' she said. 'Now let thy children beware! For there shall walk a power in the forests whose wrath they will arouse at their peril.'

'Nonetheless they will have need of wood,' said Aulë, and he went on with his smith-work.

Chapter 3 Of the Coming of the Elves and the Captivity of Melkor

Through long ages the Valar dwelt in bliss in the light of the Trees beyond. The Mountains of Aman, but all Middle-earth lay in a twilight under the stars. While the Lamps had shone, growth began there which now was checked, because all was again dark. But already the oldest living things had arisen: in the seas the great weeds, and on earth the shadow of great trees; and in the valleys of the night-clad hills there were dark creatures old and strong. To those lands and forests the Valar seldom came, save only Yavanna and Oromë; and Yavanna would walk there in the shadows, grieving because the growth and promise of the Spring of Arda was stayed. And she set a sleep upon many things that had arisen in the Spring, so that they should not age, but should wait for a time of awakening that yet should be.

But in the north Melkor built his strength, and he slept not, but watched, and laboured; and the evil things that he had perverted walked abroad, and the dark and slumbering woods were haunted by monsters and shapes of dread. And in Utumno he gathered his demons about him, those spirits who first adhered to him in the days of his splendour, and became most like him in his corruption: their hearts were of fire, but they were cloaked in darkness, and terror went before them; they had whips of flame. Balrogs they were named in Middle-earth in later days. And in that dark time Melkor bred many other monsters of divers shapes and kinds that long troubled the world; and his realm spread now ever southward over Middle-earth.

And Melkor made also a fortress and armoury not far from the north-western shores of the sea, to resist any assault that might come from Aman. That stronghold was commanded by Sauron, lieutenant of Melkor; and it was named Angband.

It came to pass that the Valar held council, for they became troubled by the tidings that Yavanna and Oromë brought from the Outer Lands; and Yavanna spoke before the Valar, saying: 'Ye mighty of Arda, the Vision of Ilúvatar was brief and soon taken away, so that maybe we cannot guess within a narrow count of days the hour appointed. Yet be sure of this: the hour approaches, and within this age our hope shall be revealed, and the Children shall awake. Shall we then leave the lands of their dwelling desolate and full of evil? Shall they walk in darkness while we have light? Shall they call Melkor lord while Manwë sits upon Taniquetil?'

And Tulkas cried: 'Nay! Let us make war swiftly! Have we not rested from strife overlong, and is not our strength now renewed? Shall one alone contest with us for ever?'

But at the bidding of Manwë Mandos spoke, and he said: 'In this age the Children of Ilúvatar shall come indeed, but they come not yet. Moreover it is doom that the Firstborn shall come in the darkness, and shall look first upon the stars. Great light shall be for their waning. To Varda ever shall they call at need.'