And surely what poetry, pathos, and eloquence, what simplicity and beauty, what rich and varied lessons of human experience, what treasures of moral wisdom, are revealed in that little book! How sublimely the poet-prophet narrates the misery of the Fall, and the promised glories of the Restoration! How concisely the historian compresses the incidents of patriarchal life, the rise of empires, the fall of cities, the certitudes of faith, of friendship, and of love! All that is vital in the history of thousands of years is condensed into a few chapters,--not dry and barren annals, but descriptions of character, and the unfolding of emotions and sensibilities, and insight into those principles of moral government which indicate a superintending Power, creating faith in a world of sin, and consolation amid the wreck of matter. Thus when forty more years are passed in study, in literary composition, in religious meditation, and active duties, in sight of grand and barren mountains, amid affections and simplicities,--years which must have familiarized him with every road and cattle-drive and sheep-track, every hill and peak, every wady and watercourse, every timber-belt and oasis in the Sinaitic wilderness, through which his providentially trained military instincts were to safely conduct a vast multitude,--Moses, still strong and laborious, is fitted for his exalted mission as a deliverer. And now he is directly called by the voice of God himself, amid the wonders of the burning bush,--Him whom, thus far, he had, like Abraham, adored as the Elohim, the God Almighty, but whom henceforth he recognizes as Jehovah (Jahveh) in His special relations to the Jewish nation, rather than as the general Deity who unites the attributes ascribed to Him as the ruler of the universe. Moses quakes before that awful voice out of the midst of the bush, which commissions him to deliver his brethren. He is no longer bold, impetuous, impatient, but timid and modest. Long study and retirement from the busy haunts of men have made him self-distrustful. He replies to the great _I Am_, "Who am I, that _I_ should bring forth the Children of Israel out of Egypt? Behold, I am not eloquent; they will not believe me, nor hearken to my voice." In spite of the miracle of the rod, Moses obeys reluctantly, and Aaron, his elder brother, is appointed as his spokesman.