“Knowledge is a light which God casteth into the heart of whomsoever He willeth.”

"This station conferreth the true standard of knowledge, and freeth man from tests. In this realm, to search after knowledge is irrelevant, for He hath said concerning the guidance of travelers on this plane, “Fear God, and God will instruct thee.” 5 And again: “Knowledge is a light which God casteth into the heart of whomsoever He willeth.” 6

-Bahá'u'lláh, The Seven Valleys And the Four Valleys, pp. 53-54, The Four Valleys, Second Valley

5. Qur’án 2:282.
6. Hadíth.