The Essence of the Work in Torah and Mitzvot
The meaning of the souls of the children of Israel [those who, regardless of their nationality, aspire to the Creator] is that they are a part of God Above [the property of bestowal]. The soul cascaded [from the world of Infinity to our world] by way of cause and consequence [the Light’s correspondence to desire] and descended [in the property of bestowal] degree-by-degree until it became suitable [so distant from the Creator’s level] to come into this world and clothe the filthy corporeal body [desire to only receive, not give].
By keeping the Torah and observing its Mitzvot, it ascends degree-by-degree [in the property of bestowal] until its stature is completed, and it is fit to receive its reward from The Whole. This has been prepared for it in advance, meaning attaining the holy Torah by way of the Names of the Creator [the properties and acts of bestowal], which are the 613 deposits.
– Baal HaSulam, “Introduction to the Book, From the Mouth of a Sage”