The soul cannot die, since the process of change and decomposition that exists in the physical world does not exist in the spiritual realm.
The life of the soul after death is completely different from when it was part of a living person.
Nevertheless, many sources, from classic mythology to folktales, demonstrate that people tend to describe the soul after it leaves the body as identical to the once-living person.
After death, the soul departs from the material, tangible body. Nevertheless, for some reason, many of us assume it remains exactly the same as it was when it dwelled in a body, except that it has been stripped of its clothes, bones, and flesh.
What remains after all this is a form that is described in many ancient and contemporary stories as a ghost.
–Rabbi Adin Steinsaltz