"In Egyptian religion, the heart was the key to the afterlife. It was conceived as surviving death in the nether world, where it gave evidence for, or against, its possessor. It was thought that the heart was examined by
Anubis and the deities during the Weighing of the Heart ceremony. If the heart weighed more than the feather of
Maat, it was immediately consumed by the monster
Ammit."
Wiki
Egyptian Museum Torino