The Star Of David symbol exists in the ancient Armenian, Ethiopian, Roman, Phoenician, Hindu, Mesopotamian, Bactrian, Egyptian, Japanese and other 14 societies all over the world.

But in the third dimension(3D) this symbol becomes Merkabah, the vehicle of the light body, the wheel of life.

The Merkabah is a symbol representing the life cycle. This symbol is connected to the Fibonacci Spiral. It is the shape of bees honeycombs. The shape of how sunflowers grow. The direction of how human hair grows. The shape of a foetus. All connected somehow and suppressed knowledge.

The fusion of the 2 interpenetrating Triangles encompasses all dualities, all opposites, all gender, all systems, all cultures; the 2 becomes the 1, the separation becomes a unification. For these reasons, the Star of David, aka Seal of Solomon, was claimed by kings and queens and other royalties for countless millennia, as a symbol of Heaven On Earth or Spirit infusing Matter. The conjoined interdigitating triangles are also a symbol for Tantric Union.

Sacred Geometry is a universal, mathematical language.

Symbols are Vibration Archetypes. The Hexagram, as well as the Yin-Yang, the Ouroboros, the Swastika, the Flower of Life, etc, are representations of the Hermetic Laws of Physics and encodes the Toroidal Dynamics, which generates all Balance, Movement and Life in the Universe.

According to Nassim Haramein's unified field theory, the foundational fabric of spacetime itself has a holofractal tetrahedral lattice structure at the sub-quantum Planck scale.

The seed of this geometry at any point is a 64 tetrahedron grid that forms the first two of what are infinite scalar octaves of perfectly balanced cuboctahedral structures forming a vector equilibrium at each scale (octave).

To form one 64 tetrahedron grid you need 8 star tetrahedrons put together.
The star tetrahedron is one of the most foundational geometries in the universe, at all scales.

Here we see this structure, also known as a Merkabah, made from 8 tetrahedrons pointing out (while the cuboctahedron is made of 8 tetrahedrons pointing inward) being depicted in 2D, in cultures form around the world.
One major question then becomes... how did they know?