Arvut (mutual guarantee) takes force when I swear that from now on my part in all others will always be fulfilled. It seems rather simple, but for me to achieve this I need to spiritually adhere to everyone and sense their desires. Since we are connected in our souls, I have to discover where my part lies inside the desire of the other and he certainly must receive something through my soul, like it works in a common physical body.
Where then is that hollow area which I have to fill according to the system that exists in the World of Infinity? I have to take care of it, and so must each of us with regard to the others. There is no soul where I don’t have a part and need to fill the space. Nobody can fill it except me; it’s a special space, a unique range, which only I can fill. And I assume responsibility for it, just let me do it!
I don’t need anything but that. Like a mother who takes care of her baby who desires one thing only: an opportunity to provide care. Try telling a mother to pass her child to someone else. Even if she is a queen and has numerous attendants who would be happy to assist her, she still enjoys feeding her offspring. She receives pleasure from doing it herself. We too have to perceive our bestowal onto others as pleasure.
Thanks to our bonding with each other, within each soul there is a space that I must fill. My soul contains 7 billion parts; outside of it, there are an additional 7 billion souls, and in each one of them I have to fill my space (as do each of us). From my point in the heart, I fill in my parts in all other souls, and each of them has to fill his part within me.
This is called the mutual penetration of souls. Each has a root from which one acts. And all other desires in me except the root are foreign. They are present in me only because I contain them all.
Originally, I am just a point. I need the others to give me fulfillment in all these desires and only then will I live! As for me, I have to use these desires to understand the others and repair the hole in them that only I can fill. When I plug these other desires into me, I see their needs and fill them from my point in the heart. You feel me through my desire plugged into you, and you fill in your space within me from your point in the heart. This is called Arvut. There isn’t any other opportunity for all of us to be fulfilled. It is the only way.
From the 3rd part of the Daily Kabbalah Lesson 5/18/10, Article “Arvut (Mutual Guarantee)”