Answer: You can define the first state of unity in a dozen ways. The idea of this analogy simply occurred to me at a certain point. I wanted to express the special feeling of warmth that everyone feels which is pleasant and illuminating in itself.
Mutual guarantee is the connection between the broken vessels that connect above the breaking as they understand that we must be connected. The strength of the connection, the need for it, its vitality and the responsibility we feel for one another is called mutual guarantee. This shows to what extent I am responsible for others and feel them inside me as myself.
Mutual guarantee is an inner state of connection that takes into account all the conditions: how we connect, with what vessels, on what level of Aviut (thickness). It refers to the vessel that is about to connect. It’s because of the separation between these parts and their connection, the growth of the left line and the right line, one in contrast to the other, that we put together the concept called mutual guarantee.
In the mutual guarantee, that is our spiritual vessel, we begin to receive the Light that Reforms and see that we are corrected. Then our mutual guarantee is corrupted again and we have to correct it once more. Everything is included in this concept. Baal HaSulam wrote two articles: “The Giving of the Torah,” since we have no way to correct ourselves without the upper force, and the article that followed it “Mutual Guarantee,” which explains how we operate and manage the upper force in order to ascend to the goal of creation.
From the 1st part of the Daily Kabbalah Lesson 1/2/14, Lesson on the Topic: “9 Steps”