The word demon does not mean today what it meant in the past. In the past, demons were simply spirits. They were not good or evil by nature. Demons have become misunderstood creatures. While there is evil in both the seen and unseen world, the term “demon” has become a generic catchall for everything evil.
The Spirit World of Ancient Humans. To understand the concept of the spirit world, one must first understand ancient societies and their relationship with death as well as their view of the world. The Middle Paleolithic period was from 300,000 to 50,000 years ago. During pre-history, the time before written history, society was animistic, polytheistic, or animalistic or all three.