The double triangle of the Star of David (Magen David) symbolizes the connection of both dimensions of G‑d, Torah and Israel: the external level of the soul connects to the external expression of G‑d via studying the esoteric parts of Torah; the essence of the soul connects with G‑d’s essence through the study and application of the teachings of Kabbalah.
The Seven Fields of the Star of David chesed (kindness), gevurah (severity), tiferet (harmony), netzach (perseverance), hod (splendor), yesod (foundation) and malchut (royalty).