§ Of the Sindar The Silmarillion

In Beleriand in those days the Elves walked, and the rivers flowed, and the stars shone, and the night-flowers gave forth their scents; and the beauty of Melian was as the noon, and the beauty of Lúthien was as the dawn in spring. In Beleriand King Thingol upon his throne was as the lords of the Maiar, whose power is at rest, whose joy is as an air that they breathe in all their days, whose thought flows in a tide untroubled from the heights to the deeps. In Beleriand still at times rode Oromë the great, passing like a wind over the mountains, and the sound of his horn came down the leagues of the starlight, and the Elves feared him for the splendour of his countenance and the great noise of the onrush of Nahar; but when the Valaróma echoed in the hills, they knew well that all evil things were fled far away.