These Nābhīs, who appeared on the occasion of any crisis, when the welfare of the public was at stake, were at the head of popular movements, giving them a right direction; they were the first to rise against the oppression of the ruling powers, and thousands of them perished in misery. Isaiah likens them to sentinels, or watchmen always on the alert, watching with eyes fixed on the horizon, charged with the duty of sounding the alarm on the approach of danger. “One calleth unto me out of Seir; Watchman, what of the night? Watchman, what of the night?” This same Isaiah compares the negligent prophets to “dumb dogs, that cannot bark, lying down, loving to slumber.” Their preaching must have been very powerful; Luther, in speaking of the prophecies of Isaiah, says, “Every word is a furnace.” Until now Jehovah had by the mouth of the Nābhīs addressed the people as a nation; the individual was not singled out. But imperceptibly a change took place; new indications presented themselves. Instead of the order, “Slay, slay,” milder accents were heard; it was as though heart spoke to heart: “Wherewith shall I come before the Lord, and bow myself before the high God? Shall I come before Him with burnt offerings; with calves of a year old? Shall I give my firstborn for my transgression, the fruit of my body for the sin of my soul? He hath showed thee, O man, what is good; and what doth the Lord require of thee, but to do justly, and to love mercy” (Micah vi.). The individual becomes more evident; like the rishis, Elijah sought the Lord; and he came to Mount Horeb: “And a great and strong wind rent the mountains, and brake in pieces the rocks before the Lord; but the Lord was not in the wind; and after the wind an earthquake; but the Lord was not in the earthquake; and after the earthquake a fire; but the Lord was not in the fire; and after the fire a still small voice,” I imagine that Elijah said to himself: “That still small voice is for _me_.” There were in certain places assemblies of Nābhīs, and schools in which the young prophets were trained in rhetoric and in composing discourses; for though some improvised, others--amongst them probably Isaiah--previously wrote their messages. All used a rhythmical language akin to poetry; the teaching of music no doubt formed a part of their education, since we know that the sound of music helped to produce the ecstasy which resulted in prophesy.[122] The gift seems to have been to some extent contagious. Prophets were found in bands, prophesying, and followed by musicians.