Should I raise the level of my soul to go to heaven?

Small fragment and illustration from the ‘Book of the Dead’ on display at the Royal Ontario Museum, Toronto, Ontario

For the ancient Egyptians, death was not the end of life. For them, death was believed to be the starting point of a new life to the world of gods as a new form. Pyramids, temples, and tombs also reflect the belief of those who want to live forever. In ancient Egypt, it was believed that the soul was a bunch of energy made up of mysterious energy. In other words, people are thought to be born with multiple souls. And after death, it was believed that if these souls went through several stages and became one complete soul, they would be able to live with the gods forever.
The soul is roughly divided into six categories. They include "ka" inherited from ancestors, active "ba," shadow "shut," "khet" the spirit of the body, "ren" individual, and "akh" whose soul is crystallized.

Depiction of the "Field of Reeds" within the Papyrus of Ani, currently at the British Museum

They are asleep while a person is alive, then wake up after death and prepare to go to the world of gods. If the spirits in this body do not wake up properly after death, they will not become complete souls. And the opportunity to go to the world of the gods is lost forever. But the ticket to the world of the gods was almost guaranteed, provided that the first condition of preserving the soul was kept. The condition was the preservation of the body. The Egyptians thought that they lived the same life as they did when they were alive, such as eating, sleeping, and drinking, and to do so, they needed an unrotten body to hold them.