Hieros Gamos is the Sacred Marriage of a Human Being with Divinity (the Inner Spirit) and the Unification between all life expressions and its levels of opposite.
Much of this knowledge has been esoteric and hidden for centuries in many Mystery School teachings and Ancient Wisdom philosophies that carried down this knowledge through certain blood lineages.
To stop the dark from manipulating your energy and influencing your body, you have to stop it in its tracks and in all ways refuse its authority or control over your being in every way.