The contemporary study of Kabbalah is divided into two: Kabbalat HaRishonim and Kabbalat Acharonim. The latest start from the Arizal and onwards, before the Arizal was the Ramak who marked the end of the Kabbalat Harishonim. The rabbis from the Kabbalat Harishonim were very focused on the meditations of the 72 names of Hashem.
One of the greatest exponents of this branch was Rabbi Abraham Abulafia. He was focuses on very deep meditations of the 72 names of Hashem through the visualization of the Hebrew letters. By mixing the letters into different combinations, the person comes into a meditative state of being.
Rabbi Abulafia explains that through the meditation of Hashem's names there is a way to receive prophecy....
