Every person who has read the Old Testament, knows that the Hebrews had among them extraordinary men really endowed with prophetic spirits. The Jews were forbidden to consult the oracles of the heathen nations round about them, but they were permitted to consult their own true prophets concerning that which was concealed from ordinary persons. There was a constant succession of prophets, and there were schools where young persons aspiring to the office of a seer were instructed. Over each of these institutions a venerable prophet presided. At first the scholars were not inspired, but received prophecies from the mouth of their master or president. At Jerusalem there was one of these schools within the second wall of the city. So great respect was paid to the prophetic character, that none were suffered to be buried in Jerusalem but kings, descendants of David, and prophets. Though old prophets could not inspire their young students, they improved their natural faculties, and taught them how to subdue irregular emotions that hindered inspiration. That the minds of the prophets might be the better disposed to receive the proper impulses, instrumental music was used in their devotions; and it is reported that at certain of their musical meetings the young men became so elated, that they manifested poetical genius as well as a prophetic spirit. When a young prophet gave unequivocal evidence of being inspired, he was installed into office by having the prophetic mantle (made of lamb's skin) thrown over his shoulders. Subsequent to inauguration, a prophet wore hair-cloth next his skin, and had a leather girdle round his loins. The general way through which revelations were made to them was in dreams and visions, or by immediate inspiration. Their dreams were sometimes, indeed generally, sent for instruction or admonition; and in the prophetic dreams a clear and distinct impression was left through a real or imaginary communication with an apparition. At times the prophets had overpowering visions when awake, during which mighty revelations were made to them. When prophetic revelations ceased, the Jews had recourse to Bath Kol, that is, the Daughter of Voice, or the Daughter of a Voice, because it succeeded, they say, the Oracular Voice delivered from the Mercy Seat when Urim and Thummim was consulted.