The law “Love your neighbor as yourself” comes from the very beginning of creation when the upper light filled the entire universe.
Speaking in physical terms, we can say that the entire force of creation, all its matter, was concentrated in one point. Then the Big Bang happened as a result of which the entire universe, all the worlds and all the galaxies emerged.
The Big Bang was caused by a short circuit between the will to receive created by the Creator and the will to bestow, which is the nature of the Creator.
When the will to bestow touched the will to receive created by it, the will to receive exploded and all the elements at all levels of the universe were formed from its particles: inanimate, vegetative, animate, human, and above the corporeal man, the level of spiritual development that makes man similar to the Creator and returns all matter to the equivalence of form with the Creator, with the light. This is what Kabbalistic cosmology says.
It does not matter where we begin to fulfill the law of Love your neighbor as yourself. The main thing is to start, and then we will advance by fulfilling it. Even if we fulfill this law in a small group, through this, as in a laboratory, we want to represent the entire creation.
The desire to build a connection between friends in the ten is a very elevated and subtle aspiration. It means that we are running an experiment in a laboratory in order to find out what creation is and what laws apply within it. By checking what laws apply between us in our small ten, we will find out how we can influence the laws of the entire vast creation.
The only problem is that we neglect the ten not understanding that we touch the most internal and most sensitive part of the entire universe through it, both of the entire corporeal and spiritual world.
If we understood what a unique tool we had at our disposal, we would treat the ten differently. This is why the true picture is concealed from us, and we are like little children playing with blocks on the floor without realizing there is a vast world around us. We do not notice anything around us in our childish mind because we are completely absorbed in this game.
If we understood that the entire law of love for your neighbor was implemented in the ten, we would integrate into it, begin to work with all our might, and through it, we would reveal the entire reality, both corporeal and spiritual, as one single whole.
From the 2nd part of the Daily Kabbalah Lesson 12/20/21, Baal HaSulam, “The Love of God and the Love of Man”