Below is a summary of the lesson:
The Creator made the creation in order to bring it to the state equivalence with Him – the state of harmony, eternity and perfection. There is a special “connecting block” between the Creator and the creation, consisting of Zeir Anpin and Malchut of the World of Atzilut. Zeir Anpin of the World of Atzilut represents the Creator and Malchut of the World of Atzilut represents the creation.
The creation is the souls that ascend and become included in Malchut by becoming corrected and connecting with each other. This is why Malchut of the World of Atzilut is called an “assembly of souls.” The connection between Zeir Anpin (the property of bestowal) and Malchut (the property of reception) is called Zivug, a merger. Such a connection is possible only if the properties of both objects are equivalent to each other.
The nature of the creation is reception; however, it can change its intention, in which case it will receive for the sake of the Creator instead of itself. Then its reception becomes equivalent to bestowal and Zeir Anpin merges with Malchut due to equivalence of form between them.
Everything we feel in this world comes from the connection between the Creator and the creation. A minimal contact between Zeir Anpin and Malchut lets us feel a small spark of Light (Ner Dakik), which gives us a feeling of existence and supports our entire life. In addition, the luminosity of Zeir Anpin awakens in us a feeling of lack of fulfillment, lack of pleasure, and lack of understanding on all levels of our development. It thereby causes us to aspire for something new, unknown, unique, and existing beyond the limits of this world.
This way, by affecting Malchut, the Upper Light attracts the souls to itself, inviting them to become full-fledged partners of the Creator.