The scripture proceeds: "And he said unto him I am God, who brought thee out of the land of the Chaldaeans, so as to give thee this land to inherit it." These words exhibit not only a promise, but a confirmation of an ancient promise; for the good which was previously bestowed upon him was the departure from the Chaldaean philosophy, which was occupied about the things of the air, which taught men to suppose that the world was not the work of God, but was God himself; and that good and evil is caused in the case of all existing things, by the motions and fixed periodical revolutions of the stars, and that on these motions the origin of all good and evil depends; and the equable ( ὁμαλή ) and regular motion of these bodies in heaven, persuaded those simple men to look upon these things as omens, for the name of the Chaldaeans being interpreted is synonymous with equability ( όμαλότης ). But the new blessing which is promised is the acquisition of that wisdom which is not taught by the outward senses, but is comprehended by the pure mind, and by which the best of all emigrations is confirmed; when the soul departs from astronomy and learns to apply itself to natural philosophy, and to exchange unsure conjecture for certain apprehension, and, to speak with real truth, to quit the creature for the Creator, and the world for its father and maker; for the scriptures tell us, that the votaries of the Chaldaean philosophy believed in the heaven, but that he who abandoned that sect believed in the ruler of the heaven and the manager of the whole world, namely, in God. A very beautiful inheritance, greater perhaps than the power of him who receives it, but worthy of the greatness of the giver.
 But it is not sufficient for the lover of wisdom to have a hope of good things, and to expect all kinds of admirable things, because of the predictions given to him, but unless he also knows the manner in which he is to arrive at the succession of his inheritance, he thinks it very grievous, inasmuch as he thirsts after knowledge, and has an insatiable desire of attaining to it; on which account he puts a question, saying, "O Lord God, how shall I know that I shall inherit it?"