After his disciple had thus become thoroughly impregnated with mystical teachings, Elijah took him to the tomb of the Patriarchs, and thence to the heavenly academy. But the angels, little pleased by the intrusion of one "born of woman," inspired him with such terror that he besought Elijah to carry him back to earth. His mentor allayed his fears, and long continued to instruct him in the mystical science, according to the system his disciple has recorded in his two works. (99) The Kabbalists in general were possessed of the power to cite Elijah, to conjure him up by means of certain formulas. (100) One of them, Rabbi Joseph della Reyna, once called upon Elijah in this way, but it proved his own undoing. He was a saintly scholar, and he had conceived no less a purpose than to bring about the redemption of man by the conquest of the angel Samael, the Prince of Evil. After many prayers and vigils and long indulgence in fasting, and other ascetic practices, Rabbi Joseph united himself with his five disciples for the purpose of conjuring up Elijah. When the prophet, obeying the summons, suddenly stood before him, Rabbi Joseph spoke as follows: "Peace be with thee, our master! True prophet, bearer of salvation, be not displeased with me that I have troubled thee to come hither. God knows, I have not done it for myself, and not for mine own honor. I am zealous for the name and the honor of God, and I know thy desire is the same as mine, for it is thy vocation to make the glory of God to prevail on earth. I pray thee, therefore, to grant my petition, tell me with what means I can conquer Satan." Elijah at first endeavored to dissuade the Rabbi from his enterprise. He described the great power of Satan, ever growing as it feeds upon the sins of mankind. But Rabbi Joseph could not be made to desist. Elijah then enumerated what measures and tactics he would have to observe in his combat with the fallen angel. He enumerated the pious, saintly deeds that would win the interest of the archangel Sandalphon in his undertaking, and from this angel he would learn the method of warfare to be pursued. The Rabbi followed out Elijah's directions carefully, and succeeded in summoning Sandalphon to his assistance. If he had continued to obey instructions implicitly, and had carried out all Sandalphon advised, the Rabbi would have triumphed over Satan and hastened the redemption of the world. Unfortunately, at one point the Rabbi committed an indiscretion, and he lost the great advantages he had gained over Satan, who used his restored power to bring ruin upon him and his disciples. (101)