Adam Clarke's Commentary on the Bible - Daniel 2:1
The second year of the reign of Nebuchadnezzar - That is, the second year of his reigning alone, for he was king two years before his father's death. See the notes on Daniel 1:1 ; (note). This was therefore the fifth year of his reign, and the fourth of the captivity of Daniel. Nebuchadnezzar dreamed dreams wherewith his spirit was troubled - The dream had made a deep and solemn impression upon his mind; and, having forgotten all but general circumstances, his mind was distressed. read more
John Gills Exposition of the Bible Commentary - Daniel 2:19
Then was the secret revealed unto Daniel in a night vision ,.... That is, after Daniel and his companions had importunately sought the Lord by prayer, the secret of the king's dream, and the interpretation of it, were made known to Daniel, and to him only; he being the person designed in Providence to be raised to great honour and dignity by means of it; this was done either the same night, or the night following, and, as some think, in a dream, and that he dreamed the same dream... read more