Interesting fact of the day. In ancient egyptian culture the saying "Eaten the heart" was a reference to grieving without justification, which was one of the mortal sins that would keep you out of their version of heaven.
It was one of the negative confessions recited by the dead during the weighing of the heart against the feather of Maat (sometimes called the feather of truth).
@freemo I wonder if the team "with a heavy heart" is somehow related to that.
@zleap I dont really know but it would make sense.
@freemo https://idioms.thefreedictionary.com/with+a+heavy+heart
doesn't really give info on origin, But interesting anyway as a definition.
@freemo also this references to the Bible
Seems you may have been right:
The phrase might be originated from the Egyptian mythology that says that the dead ones would go for judgment after death and their heart will be weighed against the Feather of Truth if their heart will weigh less, and then they will be sent to heaven by Osiris, the God.