The process of mummification of bodies in ancient Egypt* 
The ancient Egyptians' deep belief in life after death led to the formation of a large part of their culture and religion on this basis.
The Egyptians believed that man was not just a body, but also had other parts (ka, ba, akh). These parts needed care after death. The basic condition for these parts to be reunited and for the dead to have life again is that the body remain healthy. Therefore, mummification of the body was invented in a gradual process. At first (around 3500 BC) the Egyptians buried their dead in shallow pits dug in the sand and buried the necessary goods with them. But gradually they began to embalm them experimentally, that is, they put the dead in clay pots or in animal skins or wrapped in linen cloth in covered jars and finally placed them in sand and buried them. After the failure of these early experiments, the Egyptians decided to preserve the bodies before burial. Thus, various stages were formed to achieve a proper mummy. After the death of an Egyptian, the body was transferred to the embalming workshop, the embalmers were high priests who wore jackal masks. The jackal mask represented Anubis, the god of mummification with the head of a jackal. Different types of mummification arose depending on the means of the people, but in its most expensive form, the dead were transformed into the form of "Osiris", the god of the underworld.
Since the Egyptians believed that the stages of thinking and feeling occur in the heart, all the internal organs and the brain (the brain is an unnecessary organ compared to the heart) except for the heart (which of course housed the soul) were removed and separated in dry salt brine. After this process, the body was kept for 35 to 40 days, after which the deceased was first washed and then wrapped in a pile of linen cloth, sometimes up to forty layers, with various words and spells recited and these spells written in the linen cloth. This wrapping lasted for 30 days with various rituals (in total, this process took about 70 days). 
It is interesting to know that the star of the Yemeni poets, which is associated with Osiris, disappears in a period of 70 days. Osiris also disappears for 70 days before being resurrected, meaning that symbolically the deceased becomes Osiris at death. During the mummification process, he disappears for 70 days, then is reborn in the afterlife. 
Although mummification protected the bodies, to ensure that the deceased's journey into the afterlife would not be hindered, instructions were placed on the coffin, on papyrus, or on the walls of the tomb for the deceased to find their way in the afterlife. Thus, the Egyptians made every effort to achieve eternal life.