Afterlife is the belief that the human soul or spirit survives after it leaves the body from cause of death. How the spirit survives will depend on which culture you are referring to. The continuation of existence after death. Almost every society and religion has some form or belief in life after death. The Christian version of the afterlife involves some type of judgment upon the body’s demise and the assignment of the soul to either Heaven or Hell, while many other societies believe that life simply continues on or in another plane of existence.