L. Winifred Faraday, The Edda, Volume 1
“ The word is commonly used of the Aesir in Völuspa; in Alvissmal the Regin seem to be distinguished from both Aesir and Vanir. The whole story of the Aesir is overshadowed by knowledge of this coming doom, the time when they shall meet foes more terrible than the giants, Page 31and fall before them; their constant effort is to learn what will happen then, and to gather their forces together to meet it. The coming Ragnarök is the reason for the existence of Valhalla with its hosts of slain warriors; and of all the Gods, Odin, Thor, Tyr and Loki are most closely connected with it. ”
