Answer: Responsibility! Just as it is in the family, I start feeling that there is a certain system for which I have to take responsibility. It isn’t accidental that a family is established in the corporeal world and a person has to take this responsibility seriously. Family is the foundation of society, life.
In our case, we must feel as if we are in a “spiritual family” where we all have to reach similarity to the Upper One. In accordance with nature and the law of root and branch, we have to meet the condition of the mutual guarantee and implement it first in the group and then in the entire world.
The whole world, as Baal HaSulam describes, is one family, and nature will force us to learn this law.
From the Daily Kabbalah Lesson 10/15/10, “The Arvut”