"The Innermost is the Sephirah Chesed, and Buddhi is the Sephirah Geburah. The Innermost and Buddhi express themselves through the Human Soul. The Human Soul is Tiphereth, willpower, beauty." - Samael Aun Weor, The Initiatic Path in the Arcana of Tarot and Kabbalah

From the Human Soul descends the percentage of free consciousness that enters into manifestation in a physical body. That Essence is only a fraction of the Human Soul. The Human Soul is incarnated in the Human Being when the Initiate enters into the World of Tiphereth in the Fifth Initiation of Major Mysteries.