A merkaba is a star tetrahedron, a three dimensional 8 pointed star made from two triangular pyramids, one pointing up and the other down. It harmonizes male and female energy, much like a Yin/Yang symbol. The star of David is a two dimensional version of a merkaba, and was reputed to have been painted on the shields of the armies of King David as a symbol of divine protection. The merkaba does, in fact, step down source energy into the physical and is a representational invocation of “as above, so below”. The pyramid pointing upwards connects us to heavenly universal energy and represents yang, positive energy flows. The pyramid pointing downward connects to the earth and resonates with yin, negative energy flows.