There are special souls, which are very valuable for the entire system of souls since they bring this system to life and help the other souls to reach revelation and attainment and consciously join the process of development. There are many special souls, but we only know some of them. The wisdom of Kabbalah explains this system. These special souls open the gates of attainment and perception of spiritual existence to us.
These systems are part of the common system of the single spiritual organism, and they serve as the carriers of Inner Light to the other souls on the stages of development. The development of our generation depends on the souls of Rashbi, the Ari, Baal HaSulam, and Rabash. For us, they are the fundamental parts of the system, who reveal the influence of the Upper Light to us, carry the Light, the force of life, and create the proper environment, where we can develop spiritually.