The punishment for Prometheus stealing fire from the Gods and gifting it to humanity, was to be chained to a rock and having an eagle feed on his liver which would regrow the next day.
For what it's worth, Prometheus was a Titan, and Titan was immortal, so his liver regrowing the next day wasn't really that special. If eagle fed on his heart, or lungs, they would've regrown too.
The Greeks chose liver because it symbolized the defiance Prometheus had against gods.
I don't know about the Greeks but I know a lot of ancient cultures thought the liver was the most important organ (probably because it's full of blood).
For example in Persian poetry the word liver is found pretty much everywhere you would expect to see the word heart.
"You are my liver" is a nice/romantic thing to say to this day.
vconnor · · focus · HN ↗
bheadmaster · · focus · HN ↗
The Greeks chose liver because it symbolized the defiance Prometheus had against gods.
pazimzadeh · · focus · HN ↗
For example in Persian poetry the word liver is found pretty much everywhere you would expect to see the word heart.
"You are my liver" is a nice/romantic thing to say to this day.
The_Blade · · focus · HN ↗