The opening proposition consists of two parts: Part 1: The oneness of Eyn Sof… This introduces the subject of the supreme unity of God. Part 2: The entire structure… This unity is also the foundation of all the emanated realms and created beings.
Part 1: The oneness of Eyn Sof… You already know that we are not talking at all about God in Himself, namely about the essential nature of the Owner of this Will. Everything that we discuss relates only to His Will, which is all-powerful and unlimited. Of this we are permitted to speak, yet even here there is a limit to how far our minds can reach, as will be discussed below. Nevertheless, since we are not dealing with His Essence but with His Will, it is more permissible for us to seek understanding.