2:1 Daniel opened this new section of his book with another chronological reference (cf. 1:1, 21). This indicates that his interest in this book was in the progress of events and their relationship to one another. As the book unfolds, chronology plays an important part in what God revealed, though the chronology is not always without interruption.
The events related in this chapter happened in the second year of Nebuchadnezzar's reign. According to several reliable scholars Nebuchadnezzar officially became king on September 7, 605 B.C. On the first of Nisan, 604 B.C., the following spring, the first official year of his reign began. The intervening months constituted his accession year and were credited to his father's reign. The first year of his reign then ended on the first of Nisan the following year, 603 B.C. The second year of his reign (v. 1) began in 603 and ended in 602 B.C.51
Daniel probably arrived in Babylon during the summer of 605 B.C. and began his three-year education (1:4-5) shortly after that, perhaps in the fall. His curriculum may not have taken three full years; it could have ended in the spring of 602 B.C. Thus Daniel probably had finished his education and entered into government service when the events of chapter 2 unfolded, as the text implies.
The Hebrew of verse 1 says that Nebuchadnezzar had dreamed dreams that disturbed him. Evidently he had a recurring dream or similar dreams that he later described as one dream (v. 3). These dreams robbed him of rest, as Ahasuerus' dream did him (Esth. 6). Both of these Gentile rulers suffered insomnia as part of God's dealings with them and the people who lived under their authority. Other earlier Gentile rulers who received revelations from God beside Nebuchadnezzar were Abimelech (Gen. 20:3) and Pharaoh (Gen. 41:1-8).
2:2-3 Nebuchadnezzar assembled his wise men (v. 12) to interpret the meaning of what he had dreamed. Daniel identified four distinct groups of them here. The king wanted to make sure someone could help him. The magicians (Heb. hartummim) were evidently scholars who could divine the future by using various means.52The conjurers or enchanters (assapim) could evidently communicate with the dead.53The sorcerers (mekassepim) practiced sorcery and cast spells. The Chaldeans or astrologers (kasdim) here refer to the priestly caste that studied the heavens to determine the future.54Daniel prepared the reader for the failure of all the king's counselors that follows by pointing out that there were many different groups of them.