Hence, a person has the choice of going to a place where there are righteous. One can accept their authority, and then he will receive all the powers that he lacks by the nature of his own qualities. He will receive it from the righteous. This is the benefit in “planted them in each generation” so that each generation would have someone to turn to, to cleave to, and from whom to receive the strength needed to rise to the degree of a righteous. Thus, they, too, subsequently become righteous.
– Baal HaSulam, Shamati (I Heard), Article #99, “He Did Not Say Wicked or Righteous”