The oneness of Eyn Sof – He who has “No End”, blessed be He – lies in the fact that only His Will exists, and no other will exists except through Him. Therefore He alone is in control and not any other will. The entire structure is built on this foundation.
God’s supreme unity is the foundation of faith and the root of wisdom. Accordingly, this is what must be explained first. For the entire Wisdom of Truth (חכמת האמת, Chochmat HaEmet, the Kabbalah) comes only to demonstrate the truth of Faith (אמונה, Emunah). It comes to explain how all the created realms and beings and everything that happens in the universe all emerge from the Supreme Will (הרצון העליון, HaRatzon HaElyon). It shows how everything is governed in the right way by the One God, blessed be He, to bring the entire cycle of creation to complete perfection in the end. The component details of this wisdom provide detailed understanding of all the laws and processes by which the universe is governed.