The Zohar, Chapter “BeHaalotcha (When You Mount the Candles),” Item 118: …After he explained the first two banners, which are the middle line and the right line, he now explains the third banner, which is the left line, called “the face of an ox” in the animals, and “Gabriel” in the four angels. It is known that after the middle line decided and united the right line and the left line with each other, only the light of Malchut remained in the left line, which is the illumination of Hochma from below upwards, meaning VAK, while the GAR disappeared.
Two full lines, the right and the left (Hassadim and Hochma), come to us from Above. The breaking of the vessels occurred because the creature tried to fully unite Hassadim and Hochma, to receive all the Light of Hochma clothed into the Light of Hassadim for the sake of bestowal. However, it was unable to do so due to the absence of such a big screen. Therefore, the intention for bestowal (Kli) broke and the screen vanished.
Now we need to correct this breaking. By correcting it, we also begin to understand what happens within the creature, why the Creator created it this way, and what He wished for when doing so. The breaking isn’t something negative; it’s a way to prepare for putting our world together into one whole with understanding, realization, and sensation. After all, if we existed in a world that was ready for us, we wouldn’t understand it.
However, since the Creator created the World of Infinity and then broke it, He gave us an opportunity to gather the World of Infinity once again as one; to tune into the Act of Creation (Maase Merkava) and the Primary Act (Maase Beresheet) ourselves, thereby to understand Him, feel Him, and become like Him.
We certainly aren’t building all this from scratch, or from nothing, since we ourselves are created “from nothing.” However, the parts that we gather into one whole give us a full understanding and sensation of what we need in order to become similar to the Creator. That is, they give us all the information about all the parts, elements, and the depth of the universe.
Therefore, the entire Book of Zohar, all the commentaries, and the entire science of Kabbalah, tell us how to correct the broken desires (Kelim), how to connect them properly to each other, and bring them back to one whole desire (a spiritual vessel or Kli), the whole Light that previously filled the World of Infinity.
But the creature needs to carry this out with its own effort. Thereby, it achieves an understanding, sensation, perception, and power over the whole universe.