Charles Ellicott Commentary Daniel 3:22

"Therefore because the king`s commandment was urgent, and the furnace exceeding hot, the flame of the fire slew those men that took up Shadrach, Meshach, and Abed-nego." — Daniel 3:22 (ASV)

Urgent.—The same word is translated hasty (Daniel 2:15). The king’s command had been uttered while he was in a furious rage, and in consequence of this, the furnace was raised to so high a temperature that the executioners were slain. The death of the executioners forms an evident contrast with the deliverance of those who had been sentenced to die.