Researcher Glenn Kimball discuss various entities from the other side including angels, the undead, and the resurrected. Differentiating the three groups he said "the undead," were a rare breed that were born as humans but never died, the resurrected came back to life after death, and angels were never born as humans in the first place.

The prophet, priest and king known as Melchizedek was an example of the undead, Kimball said. Some evidence suggests that this being was actually Merlin the Magician, from King Arthur's day, he claimed. Further Kimball intimated that Melchizedek could still be alive, and may have paid him a crucial visit, just as he was about to toss out his manuscript about the hidden life of Jesus.

Kimball also discussed the prophetic visions of George Washington, who while in Valley Forge, was said to look up and see a being standing in front of his table. Washington recounted a "vision of three different conflicts," Kimball said, that included Africa with a "cloud over it," the American Civil War, and a last conflict that would entail the "light of a thousand suns," though the being told him "the republic would be preserved." Interestingly, Kimball mentioned that David Parry (a confidante of Washington) wrote that when George emerged from his tent, he said "the eleventh of September" is to be a "most dreadful and fearful day."