Question: In order to express something higher, we must rise from the branches of our world to the roots of the spiritual world. But the tree must have a trunk. Is there any analogy in Kabbalah to the trunk?
Answer: On the emblem of our organization, the roots are shown on top, the branches are below, and between them is the trunk and a horizontal line, which represents the transition from the upper world to our world, and vice versa. This is what is called “Machsom“—the boundary between the two worlds.
The trunk symbolizes the communication line through which the light descends from top to bottom, and from the bottom up, there is an upsurge of our desires and efforts.
From KabTV’s “Fundamentals of Kabbalah,” 10/27/19