Daniel 2:37,38 - Coke's Commentary on the Holy Bible

Thou, O king, art a king of kings, &c.— Daniel addresses Nebuchadnezzar, as if he was a very powerful king, and his empire very large and extensive. The monarch might, perhaps, think, like some of his predecessors, that his conquests were owing to his own fortitude and prudence. See Isaiah 10:13. But the prophet assures him, that his success must be primarily imputed to the God of heaven; for the God of heaven hath given thee, &c. Though most of the ancient eastern histories are lost, yet some fragments remain which speak of this mighty conqueror, and his extended empire. Berosus informs us, that he held in subjection Egypt, Syria, Phoenicia, Arabia, and surpassed all the Chaldeans and Babylonians who reigned before him. Josephus, Philostratus, Megasthenes, and Strabo assert, that he surpassed even Hercules, proceeded as far as Hercules's pillars, subdued Spain, and led his army thence into Thrace and Pontus. But his empire was of no long duration; for it ended in his grandson Belshazzar, not seventy years after the delivery of this prophesy, nor above twenty-three years after the death of Nebuchadnezzar; which may be the reason why Daniel speaks of him as the only king, "Thou art this head of gold, and after thee shall arise, &c." the rest being to be considered as nothing; nor do we read of any thing good or great performed by them. Bishop Newton, p. 408.