The Egyptian culture faithfully believed in life after death, so they embalmed the bodies in the form of mummies.
In this way, what we now call soul, body and spirit were to the ancient Egyptians the ba, the ka and the akh. In order for life to exist after death, it was necessary for the ka (body) to be preserved.
The afterlife depended on a judgment where the gods were the judges. The heart of the dead would lie in a meadow with a scale. The other dish would hold the pen of a goddess (Maat). The weight of the heart would depend on the attitudes of the person in life.
If the plate with the heart weighed more than the plate with Maat's Feather, the dead man was condemned and became a demon, threatening the cosmic balance, and Amut, a monster with a crocodile's head and lion's paws and a hippo , devoured it. Otherwise, if the Pluma weighed more, the spirit would go to the Field of Lauro, which was the Egyptian Paraiso.