The shape of the letter Aleph is comprised of an upper part (actually a Hebrew letter Yod); a lower part (an upside-down Yod; and a diagonal part (actually a Hebrew letter Vav or Wow, which means ‘and’). The diagonal Wow unites the two Yods and makes them One (the numerical value of Aleph).
This painting is based on Primordial Worlds that are described in the Lurianic Kabbalah. Notice the four letters of the Holy Name YHWH in the four corners. Also notice the Hebrew letters that represent the various spellings of this Name (as I explain in the explanation for the picture A Tapestry of Holy Names) are in the four corners of the light rectangle.
This picture shows a woman sitting in meditation. She is practicing an ancient Jewish meditative technique where one visualizes the four letters of the Holy Name of God (YHWH) in the mind’s eye. This Name is the most important and powerful Name in the Kabbalah as its four letters represent all Ten Sefirot.
The first Hebrew letter - Aleph - represents the unification of opposites. At the end of the Passover Seder there is the song, ‘Who Knows One?’ The answer, ‘I know One, One is our God who is in the Heavens and the Earth’. This means that God can be found both outside of ourselves (in the Heavens) and inside of ourselves (and the Earth).
The 18th Century kabbalist Rabbi Moshe Chaim Luzzatto (known as the Ramchal) explains in the following passage, that Adam Kadmon is associated with the four letters of the Name of God YHWH: