[@catchamber] fate. The Gods themselves are mortal too, though not quite in the same capacity. Many of them will die during Ragnarök for example. There is too little known about the faith to tell who or what specifically gave us mortality. My guess is that it was created when humans were created, so that probably means the creation of the universe. Cows licks salt block and creates the first aesir, who were trapped in the block. Beyond that? Your guess is as good as mine.