Kabbalah offers a fascinating, complex model to explain just that. Let's delve into a key concept: the idea of a partzuf (divine persona or configuration) and how it relates to the flow of light.
We often talk about Malkhut, the final sefira (emanation) on the Kabbalistic Tree of Life, as the "kingdom" or the vessel that receives and manifests the light. But it's not quite that simple. According to the "Introduction to the Sulam Commentary," Malkhut actually has two aspects when it's at the "head" of a partzuf: a "terminating Malkhut" and a "fusing Malkhut."
Think of it this way: the terminating Malkhut acts like a filter, preventing the full intensity of the supernal light from overwhelming the vessel. It's a necessary constraint, like a dimmer switch on a lightbulb. The fusing Malkhut, on the other hand, does the opposite. It blends with the supernal light, creating what's called the "returning light." This interplay is absolutely vital.
Now, these two aspects are present in the "head" of the partzuf only as "roots," almost like potential energy. They don't fully manifest until we get to the "body" of the partzuf. As we move from the "mouth" of the partzuf down to its "navel," we see the fusing Malkhut in action. This is where the supernal light becomes enclothed, or invested, within the vessel. It’s a process of integration and containment.
But what happens below the navel? That's where the terminating Malkhut takes over. This area, down to the "end of the legs" of the partzuf, represents the conclusion of that particular level of existence. Here, the supernal light is almost completely blocked. It's as if the dimmer switch is turned way down. This lower area contains another set of ten sefirot, but these are the "ten sefirot of the end," marking the limit of the partzuf.
And what happens at the very bottom? The last sefira, Malkhut, in this set of ten marks the termination point. It’s the “Malkhut of the end of the legs," the very edge of the structure, as explained in "Petiḥa LeḤokhmat HaKabbala," section 50. It’s here that the light is cut off, preventing it from spreading further down. This Malkhut is the ultimate receiver, but also the ultimate barrier.
So, what kind of light does permeate this lower area? It's primarily the "returning light," that light created by the fusing of Malkhut and the supernal light. However, as the "Introduction to the Sulam Commentary" explains, there's still a small illumination from the "direct light," though it's considered "six extremities without a head."
This is a reference to the lower partzuf of Ze’er Anpin, a level characterized by the light of giving, or ḥassadim (loving-kindness). It's like a body without a mind, relying more on reflected light than direct illumination. The higher partzufim, in contrast, are illuminated primarily by the "direct light," the light of Ḥokhma (wisdom), and are associated with the "first three" sefirot: Keter (crown), Ḥokhma, and Bina (understanding). You can read more about that dynamic in sections 50–53 of "Petiḥa LeḤokhmat HaKabbala".
Ultimately, this model of fusing and terminating Malkhut helps us understand how the boundless light of the Creator can be channeled and contained within the finite vessels of our world. It's a dynamic interplay of restriction and expansion, a dance of light and shadow that shapes our reality. So, the next time you look at a dimmer switch, remember the two faces of Malkhut, and the profound Kabbalistic wisdom they represent.