The Silmarillion

The Great among these spirits the Elves name the Valar, the Powers of Arda, and Men have often called them gods. The Lords of the Valar are seven; and the Valier, the Queens of the Valar, are seven also. These were their names in the Elvish tongue as it was spoken in Valinor, though they have other names in the speech of the Elves in Middle-earth, and their names among Men are manifold. The names of the Lords in due order are: Manwë, Ulmo, Aulë, Oromë, Mandos, Lórien, and Tulkas; and the names of the Queens are: Varda, Yavanna, Nienna, Estë, Vairë, Vána, and Nessa. Melkor is counted no longer among the Valar, and his name is not spoken upon Earth.

Manwë and Melkor were brethren in the thought of Ilúvatar. The mightiest of those Ainur who came into the World was in his beginning Melkor; but Manwë is dearest to Ilúvatar and understands most clearly his purposes. He was appointed to be, in the fullness of time, the first of all Kings: lord of the realm of Arda and ruler of all that dwell therein. In Arda his delight is in the winds and the clouds, and in all the regions of the air, from the heights to the depths, from the utmost borders of the Veil of Arda to the breezes that blow in the grass. Súlimo he is surnamed, Lord of the Breath of Arda. All swift birds, strong of wing, he loves, and they come and go at his bidding.

With Manwë dwells Varda, Lady of the Stars, who knows all the regions of Eä. Too great is her beauty to be declared in the words of Men or of Elves; for the light of Ilúvatar lives still in her face. In light is her power and her joy. Out of the deeps of Eä she came to the aid of Manwë; for Melkor she knew from before the making of the Music and rejected him, and he hated her, and feared her more than all others whom Eru made. Manwë and Varda are seldom parted, and they remain in Valinor. Their halls are above the everlasting snow, upon Oiolossë, the uttermost tower of Taniquetil, tallest of all the mountains upon Earth. When Manwë there ascends his throne and looks forth, if Varda is beside him, he sees further than all other eyes, through mist, and through darkness, and over the leagues of the sea. And if Manwë is with her, Varda hears more clearly than all other ears the sound of voices that cry from east to west, from the hills and the valleys, and from the dark places that Melkor has made upon Earth. Of all the Great Ones who dwell in this world the Elves hold Varda most in reverence and love. Elbereth they name her, and they call upon her name out of the shadows of Middle-earth, and uplift it in song at the rising of the stars.

Ulmo is the Lord of Waters. He is alone. He dwells nowhere long, but moves as he will in all the deep waters about the Earth or under the Earth. He is next in might to Manwë, and before Valinor was made he was closest to him in friendship; but thereafter he went seldom to the councils of the Valar, unless great matters were in debate. For he kept all Arda in thought, and he has no need of any resting-place. Moreover he does not love to walk upon land, and will seldom clothe himself in a body after the manner of his peers. If the Children of Eru beheld him they were filled with a great dread; for the arising of the King of the Sea was terrible, as a mounting wave that strides to the land, with dark helm foam-crested and raiment of mail shimmering from silver down into shadows of green. The trumpets of Manwë are loud, but Ulmo's voice is deep as the deeps of the ocean which he only has seen.

Nonetheless Ulmo loves both Elves and Men, and never abandoned them, not even when they lay under the wrath of the Valar. At times he win come unseen to the shores of Middle-earth, or pass far inland up firths of the sea, and there make music upon his great horns, the Ulumúri, that are wrought of white shell; and those to whom that music comes hear it ever after in their hearts, and longing for the sea never leaves them again. But mostly Ulmo speaks to those who dwell in Middle-earth with voices that are heard only as the music of water. For all seas, lakes, rivers, fountains and springs are in his government; so that the Elves say that the spirit of Ulmo runs in all the veins of the world. Thus news comes to Ulmo, even in the deeps, of all the needs and griefs of Arda, which otherwise would be hidden from Manwë.