613 Suggestions and 613 Deposits
A. The Torah and Mitzvot as they appear to all, are the keeping of Mitzvot and the study of Torah in the form of 613 counsels. These have the power to purify and cleanse the body [desire], and enhance the merit of the soul [intention], to be worthy and merit receiving the Light of the King’s face, as the soul was in its root, before it diminished and came into this base body [egoistic desire] in the base world.
B. Keeping the Mitzvot and studying the Torah in the form of 613 deposits, namely the matter of attaining His Names and the full reward of the souls.
The merit of the latter part over the former is as the merit of Heaven over Earth. This is because the first part is mere preparation, and the second part is the actual completeness and the purpose of Creation.
– Baal HaSulam, “Introduction to the book, From the Mouth of a Sage”