Odin is the chief god of Norse mythology, who gained great wisdom by undergoing several trials. In order to achieve knowledge from beyond the realm of the dead, Odin decided to sacrifice himself. He took a spear and drove it into his side. Then he tied a noose to the world-tree Yggdrasil, and hanged himself for nine days. It was after this sacrifice that Odin returned, stronger than ever.
Oden Hangs from the World Tree
