The first four chapters of the book narrate the steps by which God eventually won Nebuchadnezzar's wholehearted allegiance. Daniel, God's personal ambassador to the court of Babylon, is introduced as a man of vigorous health, giant intellect, tactful personality, and, above all, loyalty to principle. His outstanding character and ability won Nebuchadnezzar's esteem and confidence. Then came a cries of providential episodes-the dream of the metallic image, the fiery furnace, and the seven years of insanity-through which God revealed Himself to the king. In the first of these experiences he learned that Daniel's God is "a Lord of kings, and a revealer of secrets"; In the second, that He is able to protect those who are loyal to Him, and to change the king's word; and in the third, that "the most High ruleth in the kingdom of men, and giveth it to whomsoever He will."
With all of this Nebuchadnezzar's grandson Belshazzar was acquainted, but he refused to humble his heart before God as his iliustrious grandfather had done. As a result, Babylon was weighed in the divine balances, found wanting, and given by divine mandate to the Medes and the Persians.