At Daniel 5:2, 11, 18, 22, Nebuchadnezzar is referred to as the “father” of Belshazzar, and Belshazzar as Nebuchadnezzar’s “son.” The book Nabonidus and Belshazzar (by R. P. Dougherty, 1929) reasons that it is probable that Belshazzar’s mother was Nitocris and that she was a daughter of Nebuchadnezzar (II). If so, Nebuchadnezzar was the grandfather of Belshazzar. (See Ge 28:10, 13 for a comparable use of “father.”) However, not all scholars find the evidence for such a relationship completely satisfying. It may be that Nebuchadnezzar was simply the “father” of Belshazzar as to the throne, Nebuchadnezzar being a royal predecessor. In a similar manner, the Assyrians used the expression “son of Omri” to denote a successor of Omri.​—See OMRI No. 3.

During the feast and under the influence of wine, Belshazzar called for the vessels from the temple of Jerusalem to be brought so that he and his guests and his wives and concubines might drink from them while praising the Babylonian gods. Obviously, this request was due to no shortage of drinking vessels, but, rather, it constituted a deliberate act of contempt by this pagan king in reproach of the God of the Israelites, Jehovah. (Da 5:2-4) He thereby expressed defiance of Jehovah, who had inspired the prophecies foretelling Babylon’s downfall.