Rabbi Harav Yitzchak Ginsburgh explains: Since the world was created through God's 'speech', each letter represents a different creative force.
Certain letters, and the corresponding numerical value, are considered in Judaism to have greater mystical power than others because of the frequency with which they are found in 'Torah'. One such value, the expression of which holds a predominant power in the Jewish psyche, is the Hebrew letter 'vav' which has a numerical value of six. As well as its obvious relationship to the six days of creation and the Jewish sabbath Rabbi Harav Yitzchak Ginsburgh reveals much of its esoteric connotation in his book The Alef-Beit: Jewish Thought Revealed Through the Hebrew Letters. For example, one learns that: "the consummate structure of six (as in the form of the Magen David [Star of David], the outer area of whose six 'wings' equals, and therefore folds onto, the area of its inner hexagon), reflected by the six orders of the Mishnah, finds its source in the dimensions of the Tablets given to Moses at Sinai. They were cubes measuring six handbreadths in each direction." A cube has six faces, of course.
