On the other hand, music and song awakened the prophetic power (comp. 2 Kings iii. 15), and “The spirit of prophecy alights only on him who is wise, strong, and rich” (Babyl. Talm. Shabbat, 92a). Although the preparation for a prophetic mission, the pursuit of earnest and persevering study, as also the execution of the Divine dictates, required physical strength, yet in the moment when the prophecy was received the functions of the bodily organs were suspended. The intellect then acquired true knowledge, which presented itself to the prophet’s imagination in forms peculiar to that faculty. Pure ideals are almost incomprehensible; man must translate them into language which he is accustomed to use, and he must adapt them to his own mode of thinking. In receiving prophecies and communicating them to others the exercise of the prophet’s imagination was therefore as essential as that of his intellect, and Maimonides seems to apply to this imagination the term “angel,” which is so frequently mentioned in the Bible as the medium of communication between the Supreme Being and the prophet. Only Moses held his bodily functions under such control that even without their temporary suspension he was able to receive prophetic inspiration; the interposition of the imagination was in his case not needed: “God spoke to him mouth to mouth” (Num. xii. 8). Moses differed so completely from other prophets that the term “prophet” could only have been applied to him and other men by way of homonymy. The impulses descending from the Active Intellect to man’s intellect and to his imagination produce various effects, according to his physical, moral, and intellectual condition. Some men are thus endowed with extraordinary courage and with an ambition to perform great deeds, or they feel themselves impelled to appeal mightily to their fellowmen by means of exalted and pure language. Such men are filled with “the spirit of the Lord,” or, “with the spirit of holiness.” To this distinguished class belonged Jephthah, Samson, David, Solomon, and the authors of the Hagiographa. Though above the standard of ordinary men, they were not included in the rank of prophets. Maimonides divides the prophets into two groups, viz., those who receive inspiration in a dream and those who receive it in a vision. The first group includes the following five classes:—1. Those who see symbolic figures; 2. Those who hear a voice addressing them without perceiving the speaker; 3. Those who see a man and hear him addressing them; 4. Those who see an angel addressing them; 5. Those who see God and hear His voice. The other group is divided in a similar manner, but contains only the first four classes, for Maimonides considered it impossible that a prophet should see God in a vision. This classification is based on the various expressions employed in the Scriptures to describe the several prophecies.