For advancement of material knowledge there is a need for personal ability and researching aptitude, but in the case of spiritual knowledge, all progress depends more or less on the mercy of the spiritual master. The spiritual master must be satisfied with the disciple. Only then is knowledge automatically manifest before the student of spiritual science.
Real knowledge is expounded in Bhagavad-gita: “Just become Krishna conscious. Just worship Krishna and become a devotee of Krishna.”
Srimad Bhagavatam 3.24.18,
Knowledge is useless if it doesn’t create remembrance of God.
Vedic knowledge means hear first, see later.
Real knowledge flows, from guru to sisya, not through words but through consciousness.
Genuine spiritual knowledge or vijnana means “I submit to the Vedas” whereas material knowledge means “knowledge submits to me & works for me.”