I term the Immortal One a plasmate, because it is a form of energy; it is living information. It replicates itself—not through information or in information—but as information.
The plasmate can crossbond with a human, creating what I call a homoplasmate. This annexes the mortal human permanently to the plasmate. We know this as the "birth from above" or "birth from the Spirit." It was initiated by Christ, but the Empire destroyed all the homoplasmates before they could replicate.