Rabbi Kalonymus Kalman Halevi Epstein, Maor va Shemesh (Light of the Sun): The writing implies that the goal of the creation was that no bestowal should descend unless by intervention from below and the raising of MAN, which the assembly of Israel awaken, and, by raising MAN, all the worlds thus ascend and add to the desire to adhere to their root.
This is the main delight for the Creator, that Israel purify themselves from the depths of corporeality and yearn to adhere to their Maker.
There is the Light of Ein Sof (Infinity) and the vessel of Ein Sof. The vessel of Ein Sof is all of humanity, and there is a pipe between them with a valve or a tap, which is us. The more strongly we unite, the more we open that tap, the greater the flow of the upper abundance that reaches the vessel of Ein Sof, all of humanity, through us.
Therefore, everything depends on the assembly of Israel, on the connection of the people in whom the Reshimot (reminiscences) have awoken that oblige them to yearn to the Creator, which means to look for a special connection with Him. On the other hand, they can be connected with the whole, great vessel of all of humanity.
We must determine a mutual connection both with the upper level and with the lower level in order to connect them through us. To the extent that we unite in this work, we will attain bestowal.
At first, this work is depicted to us as if there is the Upper Light above and a big vessel below, and we are in the middle like a pipe that conveys the Light. When we connect, we open the pipe and the Light and abundance flows through them to the lower, corrects, connects, and fills them.
But it is only now that we believe in this schematic form. Later, we will see that it’s a bit different, that the Creator is already in the big vessel of humanity, and therefore we enter that vessel in order to meet the Creator.
It is by our connection that we allow Him to be revealed in the created beings, but He is already in them. All this work takes on a different form. We begin to feel that the Creator and the created beings are adhered as one, and only we are external to this connection and unity. This is the second phase of the work, and then there is also a third phase.
In the meantime, we must picture this work this way, as if we were a pipe with a tap and that, according to our connection, we are rewarded with conveying the Light from the Surrounding to the surrounded, which means from Ein Sof of the Light to the Ein Sof of the vessel.
From the 2nd part of the Daily Kabbalah Lesson 5/25/14, Talk about the Importance of Unity