Tanya Chapter 2 part 2. When it comes to the Divine Essence, there's absolutely nothing we can say to describe it. Let's pull this idea into our context

Now let’s look at the Kabbalistic teachings of the Arizal, who exposed supremely high levels of the Divine reality. How does Maimonides’ statement apply in this context? Only once the Infinite Light clothes itself in the highest sefirot of the world of Atzilut. Beyond that, there’s really nothing to say. In fact, the highest level of the known spiritual reality is exactly equal to the lowest level, that of material action, in this lowest physical world, relative to the Divine Essence.