Daniel 2:37

a king of kings king of kings, a title applied to Nebuchadnezzar in Ezekiel 26:7, though (Prince) not the customary Babylonian form of address. It is, however, one that was borne constantly by the Persian kings: cf. Ezra 7:12; and see the series of inscriptions of Persian kings, published in Records of the Past, 1st ser., i. iii ff., v. 151 ff., ix. 65 ff. An Aramaic inscription found at Saqqarah, near Cairo, is dated in the 4th year of "Xerxes, king of kings"

for, &c. unto whom the God of heaven(Daniel 2:19) hath given the kingdom, the power, the strength, and the glory. Daniel ascribes Nebuchadnezzar's dominion to the Providence of God, exactly as is done (in other terms) by Jeremiah (Jeremiah 25:9; Jeremiah 27:6; Jeremiah 28:14).