Rabash writes, “My father Baal HaSulam promised us that by following his path and carrying out his advice, we will merit eternal life from the Creator, adhesion to Him.” Rabash himself reached a high level of spiritual attainment by using only the works and the advice of his father. Evidently, there is no other practical means for our generation to reveal the Upper world except for the writings of Baal HaSulam. His soul is especially close to us since we value a person according to how he benefits us.
We don’t compare the levels of the Kabbalists: Moses, Rashbi, the ARI, Baal HaSulam, and Rabash. To receive an eternal, spiritual life we depend on the souls that preceded us: Rabash and Baal HaSulam. It’s similar to how a mother is of the most importance to her child. Of course there are many elevated souls, but we can only unite with the spiritual system through Rabash and Baal HaSulam.
From the 4th part of the Daily Kabbalah Lesson 9/16/10, Lesson for Commemoration of Baal HaSulam’s Passing Day