Art

Perhaps art was truly invented to communicate with the divine.

Dance and music are universally used in rituals for inducing trance. Paintings are records of imagery seen from the beyond.

It's a pity that I only know writing. Not to say it doesn't work (pretty sure it works somewhat - I learn by reading my own writing so there's that), but I suppose the tradition of writing isn't as well established. The grass is always greener on the other side.