613 Suggestions and 613 Deposits
That explains to us why he calls the 613 Mitzvot 613 counsels [Eitin de Oraita, recommendations about how to correct the Kli] in several places in The Zohar, and in many other places in The Zohar he calls the 613 Mitzvot [Pkudin, the Lights that must enter the corrected Kli] “613 deposits.” This is so because at first, one must keep the Torah and the Mitzvot in order to purify his body [oneself from egoism] and enhance his soul [aspiration for love and bestowal].
At that time, the 613 Mitzvot are as 613 counsels [corrections of the Eitin type] for him, “tips” by which to gradually purify and be awarded coming before the King [rise above egoism], and receiving the Light of his face. This is because keeping Torah [drawing of the Light] and Mitzvot [correction of 613 egoistic desires] gradually purify him [from his natural egoism], until he is rewarded with the Light of the King’s face [universal property of bestowal and love; otherwise, there is no use in his actions].
Also, it is written similarly in the Gemarah: “The Creator cares not if one slaughters at the throat or slaughters at the back of the neck [in other words, mechanical acts themselves are pointless]? Rather, we were given the Torah and Mitzvot only to purify Israel [all who aspire to the Creator, to the property of “love others as yourself].”
However, after one has been sufficiently purified [from egoistic desires] and merits the Light of the King’s face [the property of bestowal], one’s eyes and soul [desire to bestow] open and he is awarded [within] the attaining the 613 Sacred Lights found in the 613 Mitzvot [corrected desires]. These are His Holy Names [attainment], the ones he can attain.
By keeping each of the Mitzvot [correction of a desire], one takes [inside] the part of the Light deposited in that Mitzva, since the Mitzva is a Kli (vessel) [the secret of the desire] where the Light is clothed, meaning a Holy Name that belongs specifically to that Mitzva. This is the meaning of “The Mitzva is a candle and the Torah—Light.” At that time, he calls the 613 Mitzvot “613 commandments (deposits).”
– Baal HaSulam, “Introduction to the Book, From the Mouth of a Sage”