GEN1219 When one studies Torah for its own sake and labors and exerts himself for the sake of Heaven, his two kidneys become like two springs and he produces reasons and halachos himself, what he had never learned and what had not even been given to Moshe on Sinai, as we find in respect to Avraham of blessed memory Genesis Rabbah 95:3, who never was taught by any man, but who sat and reflected by himself concerning mitzvos and in this way derived the whole of Torah and mitzvos, the Scripture testifying about him [this verse.].   GATES 577