Mummification is the process of preserving of a body that involves drying the body to eliminate the sources of decay. The main purpose of mummification in ancient cultures was to create a new body the deceased could use in the afterlife.
The ancient Egyptians believed that the soul of the deceased would live forever in the afterlife and they used mummification to create a body that could continue to house the ka and ba of the individual, which were the nonphysical elements of a person. For this reason, they paid special attention to the external appearance of the mummy. The mummy was designed to make the individual complete in the afterlife and the ancient Egyptians strived to preserve the appearance of the individual as much as possible.