Kabbalah su Esodo 3:5

We see that when bad character traits are embedded in a person they obstruct him from fulfilling Torah and mitzvoth. Even if he does fulfill them, it will not be for the sake of heaven and they will be very burdensome to him. About such a person scripture states²⁵Proverbs 11, “A golden ring in the snout of a pig”, because his impurity is still within him, vested within the Kelipot. This is as our sages, of blessed memory said²⁶Talmud Yoma 75, “If a person is meritorious, his Torah learning becomes a life-giving elixir. However, if he is not meritorious it becomes fatally poisonous”. However, if a person rises up to overcome his evil inclination and battles against it until, through great effort, he rids himself of his bad character traits, and thus truly fulfills Torah and mitzvoth; he is called a “Perfect Tzaddik”, a “G-d Fearing Person” and a “Mighty Warrior who conquers his evil inclination”. Moreover, if a person advances himself in this, accustoming himself to it to an even greater degree, until he totally rids himself of all bad traits, so that his soul no longer lusts after them at all and he acquires the good traits to the point that they, literally, become natural to him, in that he no longer need battle against the evil inclination, since both his body and fundamental soul have been thoroughly cleansed of all physical dross, as Sefer HaTikunim comments²⁷ Tikun 31 and 48on the verse²⁸Exodus 3, “Take your shoes off your feet” in regard to Moses; then the four letters of G-d’s name (הוי"ה) become invested in him and he becomes a holy seat for G-d’s chariot, Blessed is He. Such a person is called a “Friend of G-d out of love”. He is called a “Perfect Chassid”, “One who is perfect with every kind of perfection”.