What are the motifs in The Silmarillion by J.R.R. Tolkien?

Sacrificial love is a recurring idea in these stories. There are many instances of Sacrificial Love in The Silmarillion. Some occur for the sake of family while others occur because of romantic love. The Valar begin this sacrifice by their descent from the realm of Iluvatar to prepare Ea because of their love for Iluvatar's vision and the Children of Iluvatar. Their tireless efforts further demonstrate the extent of their love. Yavanna causes many things in Arda to sleep until the coming of the Firstborn, proving that her efforts are for the enjoyment of the Children of Iluvatar. Elwe is enchanted by Melian and forgets his people for a while, sacrificing his throne to his love for Melian.