The entire great Kli of the soul was shattered into fragments, and among the fragments are pure Kelim (vessels) that are close to the characteristics of the upper Light. It is very easy for them to be awakened, so when Abraham called to them, they were immediately awakened, got up, and followed him, leaving Babylon.
This is Israel, which only seems to be the most egoistic part in the world because it has already gone through the path of spiritual development. But essentially, this is a very refined Kli (vessel) and belongs to the Kelim of Galgalta ve Eynaim (GE).
Every remaining part of the collective Kli belongs to the nations of the world, and specifically through their correction, we attain Ohr Hochma (Light of Wisdom). They are the goal of creation, whereas Israel acts only as a help in this realization, in the role of an adaptor, a conduit.
Question: It follows that the Creator chose these refined Kelim as sacrifices?
Answer: On the one hand, we are sacrifices, but on the other hand, Israel is a unique nation that serves all the others. Everything depends on how you accept this honored mission: Do you think and receive your service to the Creator and to the world as a respectable merit or as a punishment?
You came into this world to serve all the nations of the world and through this to serve the Creator. These are the refined Kelim that are awakened first and have the readiness to connect. They have an initial preparation for correction because they have the “merit of the forefathers,” meaning that they have already passed through spiritual states that were latent in them in a concealed form and they can be awakened again.
All this is done to be a light to the nations, so that in them the thought of creation will be realized. The goal is to reach all the heaviest Kelim. They are called “the chosen people” because they have a unique role.
Israel is in the service of the Creator and the creatures, and we are in the middle as a conduit, as a pipe. And it is essential to accept this mission when it is necessary, otherwise you will always be obligated from Above. There is no reason to argue with the program of creation; the more rapidly that Israel understands what must be done, it will be to our benefit and the benefit of others and there will be less suffering.
From the 5th part of the Daily Kabbalah Lesson 5/19/14, Writings of Baal HaSulam