Answer: It is because spiritual knowledge is an indication that I receive the upper light that changes me. It is not like what I hear from a teacher at school or at university, because what I hear from a teacher cannot impact me in any way.
To the extent that the upper light enters me and changes my attributes, I begin to perceive these attributes. After all, I do not immediately understand what is happening to me, but only as a result of the changes that take place in me.
From KabTV’s “Fundamentals of Kabbalah” 6/16/19