I’ve found a translation of the story of Odin’s ritualistic hanging on a tree, where he undergoes some form of ‘death’ in order to gain knowledge in the form of magic runes. It is found in the poem Havamal from the Elder Edda, translated here by EOG Turville-Petre:

I know that I hung
on the windswept tree
for nine full nine nights,
wounded by a spear
and given to Odin,
myself to myself;
on that tree
of which none know
from which root it rises.

They did not comfort me with bread,
and not with the drinking horn;
I peered downward,
I grasped the ‘runes,’
screeching as I grasped them;
I fell back from there.

I learned nine mighty songs
from the famous son
of Bolthor, father of Bestla,
and I got a drink
of the precious mead,
I was sprinkled with Odrerir.

Then I began to be fruitful
and to be fertile,
to grow and to prosper;
one word sought
another word from me;
one deed sought
another deed from me.