Odin’s self-sacrifice for the runes is described in the Old Norse poem Hávamál. The speaker says he hung for nine nights on a windswept tree, wounded by a spear and given to Odin, himself to himself. At the end he takes up the runes and falls from the tree.
The ordeal in Hávamál
The verses emphasize hunger, thirst, pain, isolation, and sudden acquisition of hidden knowledge. No other god rescues Odin. The sacrifice is reflexive: the giver, victim, and divine recipient share the same identity, matching Odin’s willingness to pay severe costs for wisdom.
Is the tree Yggdrasil
The stanza does not name the tree, but readers commonly identify it with Yggdrasil, the cosmic tree described elsewhere in Norse poetry and Snorri’s Edda. That identification is reasonable within the mythic setting, yet it should be stated as contextual interpretation rather than a word found in the verse.
Runes and later comparison
Runes were writing systems used by Germanic-speaking peoples, and the poem gives them sacred and magical significance. Similarities between Odin’s hanging and Christian crucifixion imagery have prompted debate because the text was recorded in a Christian society. Direct borrowing is possible but not proven by resemblance alone.