Don't take what this Rothschild says as Gospel. Don't take anything as gospel. However, consider that when some interloper modified human genetics through hyrbidization and added quite some depth to our ability to resonate with the cosmos we suddenly became the vessels appropriate for in-habitation by higher magnitudes of consciousness.
We have our ego, but stacked upon this, or lying beneath, is the subconscious. Consciousness is energy, non-local in nature and disregards space and time. Our higher abilities include the ability to channel, to have forces and ethereal personae inhabit and act through us. Traditionally we consider the forces of the heavenly spheres, or planets as agents of consciousness that enter and act our their dramas through us. The stars play their roles as well, emanating consciousness that attunes with our brain transceiver.
If you attune yourself negatively you may encounter "archons", negatively charged entities of pure consciousness. Anger, malice, rage, envy, hatred, all the worst manifestations of consciousness. These entities, since they are made of pure consciousness, when they approach you they may sound as if they are your very own thoughts. They may torment you, try to tear you down, make you hate yourself. They feed on suffering. They are energy vampires and the more you feed them, the more they have freedom to act through you. Someone who's human consciousness is entirely vacant, who has becomes 100% archon, this individual is what is classically known as "possessed".
But know this: the human soul is a trans-dimensional, positively oriented creative being with the power to shape reality. Establish your higher self through visualization and use your mental power to tear down and fight back against negativity. There are people out there who would tell you not to believe any of this, but it gives you strength. Human souls are angelic and from another realm, only here in the physical plane for a sojourn to learn more about the universe. It is in our nature to fight the archons, it is the eternal fight to establish either heaven on earth, or something infernal.