The light of Hochma [wisdom] is called “attainment of the Torah and clear knowledge.” This is received in a Kli [vessel] of a desire to receive. Hence, if a person is not qualified to receive not for himself, for then he will fall into separation, the light does not spread in him.
This is not so with the light of Hassadim [mercies], regarded as the Kli being a desire to bestow, meaning annulment before the Creator, and not wanting any right for its own existence. On this there was no Tzimtzum [restriction]. That is, even if a person is in a lowly state, he can still receive a thought about repentance, meaning that he has the ability to take upon himself devotion to the Creator.
This is as our sages said, “He who betroths a woman even if he is completely righteous, she is betrothed, for he may have meditated repentance in his heart” (Kidushin 49b). In other words, there was no Tzimtzum on this quality, and he can always receive the light of Hassadim, meaning extend powers from above so he can dedicate his soul and spirit to the Creator.
There are no tests on this, whether his intention has always been solely for the sake of the Creator. Rather, he can repent every single moment. Conversely, in order to obtain the light of Hochma, meaning to obtain upper degrees in the manner of the secrets of the Torah, his intentions must always be only for the Creator.