What represents the Iod He Vau He from the Pentagram?

Answers from the books of Samael Aun Weor

 

The masculine and feminine principles conjoin in the Holy and mysterious Tetragrammaton; an esoteric name which must not be spoken in vain and which has a relationship with the letters of the name of the Eternal in Hebrew. He Vau He Iod (Hebrew symbols which are read in reverse).

Samael Aun Weor. Tarot and Kabalah.