Albert Barnes Commentary Daniel 3:13

"Then Nebuchadnezzar in [his] rage and fury commanded to bring Shadrach, Meshach, and Abed-nego. Then they brought these men before the king." — Daniel 3:13 (ASV)

Then Nebuchadnezzar, in his rage and fury - The word translated “fury” means “wrath.” Everything that we learn of this monarch shows that he was a man of violent passions, and that he was easily excited, though he was also susceptible to deep impressions on religious subjects. There was much here to rouse his rage. His command to worship the image was explicit. It extended to all who were summoned to its dedication. Their refusal was an act of explicit disobedience, and it seemed necessary that the laws should be vindicated. As a man and a monarch, therefore, it was not unnatural that the sovereign's anger should be aroused in this way.

Commanded to bring Shadrach ... - It is remarkable that he did not order them to be slain at once, as he did the magicians who could not interpret his dream (Daniel 2:12). This shows that he still had some respect for these men and that he was willing to hear what they could say in their defense. It is also proper to recognize the providence of God in inclining him to this course, so that their noble reply to his question might be put on record, and that the full power of religious principle might be demonstrated.