Then Nabuchodonosor drew near to the door of the burning fiery furnace, and said, Sedrach, Misach, and Abdenago, you servants of the most high God, proceed forth, and come here. So Sedrach, Misach, and Abdenago, came forth out of the midst of the fire.
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George Leo Haydock
Smell, such as is felt when people, (Haydock) or their garments, come too near the fire. Pagans have sometimes walked through fire; but they first anointed their feet with certain preservatives, as Servius (in Æn. xi.) remarks from Varro. (Calmet)
Here the fire burnt only the bands, (ver. 23, 92.; Haydock) God making his creatures afford comfort to his servants, as was the case when the Goths attempted to burn St. Benedict. (St. Gregory, Dial. iii. 18.) (Worthington)