Before we continue to explain the next part of the creation and expression of G-d, let us first have a general overview of the next three worlds, Briyah, Yetzirah and Asiyah (Creation, Formation and Action). In general, these three worlds are known by the acronym BiY”A. Generally, the world of Atzilut corresponds to the general sefirah of Chochmah. The reason for this is because Atzilut itself is still totally bound up with the essence, and is therefore still considered to be part and parcel of the infinite world of total G-dliness. Furthermore, just as Chochmah is called “Ain” (Nothingness) and Binah is called “Yesh” (Somethingness), this applies likewise, to the world of Atzilut relative to the lower worlds which follow it. In contrast, the worlds of Briyah, Yetzirah and Asiyah generally correspond to thought, speech and action. Briyah corresponds to thought, Yetzirah corresponds to speech and Asiyah corresponds to action. As was explained before, it is only in these realms of thought, speech and action, where “somethingness” arises. Being that Binah represents comprended thought, it is called Yesh (Somethingness). Likewise, the six emotions are felt emotions of the heart, and Malchut is the “revealed world” of action or speech. Therefore, they too are in the realm of somethingness.
(Because of this sense of somethingness, it is in these three worlds that evil arises, as will be explained later.)