By having a copy in some form of the prayers from the Book of the Dead, in order to correctly answer questions asked you. Your heart must be measured-weighed against the feather of ma'at. If it is heavier than that, your soul would endure death for the dead, being devoured by the monster Apep.
The book of the dead.
=== === === === === ===for more information about why the heart was left in the body type in this question What were the steps of Egyptian afterlife?
the answer is 50 to 100 thousand years
Egyptian burial shrouds were cloths (often or always made of linen) they wrapped mummies in. Apparently seven shrouds were used. They believed burial shrouds were essential to the afterlife.
Ancient Egyptian painting demonstrates the civilization's emphasis on order, balance, and the afterlife. The artwork often features symbolic representations, showcasing gods, pharaohs, and daily life, while adhering to strict conventions in style and perspective. These paintings served both a decorative and functional purpose, often intended to accompany the deceased in tombs and ensure their journey in the afterlife. Overall, they reflect the cultural values, beliefs, and social hierarchy of ancient Egyptian society.
The afterlife was a main concern of the Egyptian civilization.
The tombs of the ancient Egyptian pharaohs and nobility are filled with items that would be needed in the Egyptian afterlife. Also the uncovered writings of the ancient Egyptians speak about the afterlife.
The ancient Egyptian belived in afterlife. And that was why the mummified the dead in preparation for this.
The afterlife
They did not do anything. It was part of their belief.
Mummification
Heaven.
The book of the dead.
=== === === === === ===for more information about why the heart was left in the body type in this question What were the steps of Egyptian afterlife?
Pharohs and their belongings to help them trough the afterlife
Embalming
the answer is 50 to 100 thousand years