A thought.
If you take the chemist route and depict the atomic placement of particles around a nucleus, you see that the carbon atom (which has 6 electrons, 6 neutrons and 6 protons) arranges in a manner in which you have two electrons on the first orbital on opposite ends of the vertical and then 4 electrons in the second orbital forming a square. By drawing a line through all of these, you achieve the unicursal hexagram. Personally, I am more inclined to look at it through the lens of the Pythagorean decad, thus giving me the thought of universal rigidity, stability, adaptability and crystalline structures, instead of linking the 666 together. I find that those concepts can apply to the fact that all organic life has a 6 like nature as well as a biological foundation on the carbon atom. As though the carbon atom is the gateway, the Tiphareth of the biological sphere.
Thoughts?