Answer: They are the three stages of spiritual development when we ascend from our world, from our current state of search, darkness, misunderstanding, confusion, detachment, and emptiness that humanity is experiencing today. Now almost everyone in the world goes through states that lead us to spiritual birth.
It is a feeling of an ending, a feeling of limitation, a lack of perspective, a desire for something to develop because we are disappointed in our development since it brings us only continuous disappointments and even greater emptiness.
All these states are very useful and represent exactly those forces by which we rise from our world to the first spiritual world, the world of Assiya, and enter the real intrauterine development and start to feel to some extent the presence of the upper.
We start to feel that we are inside a global nature, which is a single organism that affects all of humanity, the whole world, and even something more—some kind of thought, plan, beginning, end, goal, and process within which we exist.
Attainment of this is attaining the level of Nefesh and the world of Assiya.
From KabTV’s “The Power of The Book of Zohar” #19