[Commentaries in brackets are mine]
Baal HaSulam, “The Arvut (Mutual Guarantee): The Entire Nation of Israel is Responsible for One Another
This is to speak of the Arvut (Mutual Guarantee) [that can be achieved only] when all of Israel became responsible for one another.
Because the Torah was not given to them [to the group that was founded by Abraham and brought to a decision to stay in Arvut by Moses] before each and every one from Israel was asked if he agreed to take upon himself the Mitzva (precept) of loving others in the full measure, [as a result of their work on achieving unity] expressed in the words: “Love thy friend as thyself…
[The essence of the commandment is] Each and every one in Israel would take it upon himself to care [for all participants of the group] and work for each member of the nation, [for each friend] and to satisfy all their needs, no less than the measure imprinted in him to care for his own needs.
And once the whole nation unanimously agreed [to be in a state of a complete unity in their desires] and said, ‘We shall do and we shall hear,’ each member of Israel became responsible that nothing shall be missing from any other member of the nation. [Meaning their spiritual development] Only then did they become worthy of receiving the Torah, [the Light of correction that would gradually lead them to Arvut] and not before [because there was no readiness to implement mutual guarantee and the desire to unite as it was before the shattering of one unified Soul.]
The Kabbalists About The Nation Of Israel And The Nations Of The World, Part 2
The Kabbalists About The Nation Of Israel And The Nations Of The World, Part 1
Kabbalists About Kabbalah Today, Part 10