I came across some interesting information in a book I have just finished ("Advanced Wiccan Spirituality" by Kevin Saunders)
The original Hebrews also saw the points of the pentagram as representing four elements of God (two masculine elements and two feminine elements) with the uppermost point representing spirit.
The four Hebrew letters around the lower points of the pentagram (figure 7) are Yod, He, Vau, He. These are the four letters (equating to sounds and vibrations) that spell out what is known as the true name of God in Hebrew - YHVH - pronounced Yah We Yah Veh, or more commonly, Jehovah. We need to remember that Hebrew is written from right to left, so YHVH is put on the pentagram from the bottom right working anti-clockwise.
The symbol at the top, in the position of spirit is Shin (or Sin). ...... Sin or Shin in its position at the top of the pentagram represents the divine spirit followed through the unbroken line of the figure through the other energies that form the name of God. If we now drop the Shin letter from its position in the spiritual plane into the position of the earthly material plane, i.e. into the middle of YHVH, we get the word YHSVH or Joshuah, or perhaps even more commonly known as Jesus. Jesus then is the representation of God on the physical plane and Sin is that element of the divine spirit when it is trapped in the material.
The text goes into much more detail about many other associations with the pentagram, including how it represents the passive and active feminine forces of God and similarly the passive and active Masculine forces of God. Also how this relates to the Kabballa.
Overall I think this is very interesting and puts a spanner in the works for the JW idea of Jehovah being nothing to do with ancient pagan religion.