"Good," he said, "you have answered rightly. Tell me, now, the names of the horses that carry day and night across the sky."
Before the words were fairly spoken Odin replied, "Skinfaxe and Hrimfaxe." The giant could not conceal his surprise that a man should know these things.
"Once more," he said quickly, as if he were risking everything on one question; "tell me the name of the plain where the Last Battle will be fought."
This was a terrible question, for the Last Battle was still far off in the future, and only the gods and the greatest of the giants knew where and when it would come. Odin bowed his head when he heard the words, for to be ready for that battle was the divine work of his life, and then said, slowly and solemnly, "On the plain of Vigrid, which is one hundred miles on each side."
Vafthrudner rose trembling from his seat. He knew now that Gangraad was some great one in disguise, and that his own life hung on the answers he himself would soon be forced to make.
"Sit here beside me," he said, "for whoever you are, worthier antagonist has never entered these walls."
Then they sat down together in the rude stone hall, the mightiest of the gods and the wisest of the giants, and the great contest in wisdom, with a life hanging in either scale, went on between them. Wonderful secrets of the time when no man was and the time when no man will be, those silent walls listened to as Vafthrudner asked Odin one deep question after another, the answer coming swiftly and surely.
After a time the giant could ask no more, for he had exhausted his wisdom.
"It is my turn now," said Odin, and one after another he drew out from Vafthrudner the events of the past and then the wonderful things of the race of giants, and finally he began to question him of that dim, mysterious future whose secrets only the gods know; and as he touched these wonderful things Odin's eyes began to flash, and his form to grow larger and nobler until he seemed no longer the humble Gangraad, but the mighty god he was, and Vafthrudner trembled as he felt the coming doom nearing him with every question.
So hours went by, until at last Odin paused in his swift questioning, stooped down, and asked the giant, "What did Odin whisper in the ear of Balder as he ascended the funeral pile?"