Daniel 3:22 (BSB)

The king’s command was so urgent and the furnace so hot that the fiery flames killed the men who carried up Shadrach, Meshach, and Abednego.

From Daniel 3. Also in the ESV.

Commentary on Daniel 3:22

• Matthew Henry (Presbyterian), Matthew Henry's Complete Commentary on Daniel 3:19-27: In these verses we have, I. The casting of these three faithful servants of God into the fiery furnace. Nebuchadnezzar had himself known and owned so much of the true God that, one would have thought, though his pride and vanity induced him to make this golden image, and set it up to be worshipped, yet what these young men now said (whom he had...
• John Gill (Reformed Baptist), Exposition of the Old and New Testaments on Daniel 3:22: And therefore, because the king's commandment was urgent,.... Or was ordered to be obeyed in haste, and with expedition and dispatch, hence the men were cast into the furnace with clothes on; or those that cast them were not so careful of themselves: and the furnace exceeding hot; being heated seven times more than usual: the flame of the fire slew those men that took...
• Jamieson-Fausset-Brown (Reformed), Commentary Critical and Explanatory on the Whole Bible on Daniel 3:22: flame . . . slew those men-- (Dan 6:24; Psa 7:16).
• Keil & Delitzsch (Lutheran), Biblical Commentary on the Old Testament on Daniel 3:22-23: Dan 3:22-23 דּי מן (because that), a further explanatory expression added to דּנה כּל־קבל (wholly for this cause): because the word of the king was sharp, and in consequence of it (ו), the furnace was heated beyond measure for that reason. The words אלּך גּבריּא (these mighty men) stand here in the status absol., and are again taken up in the pronoun המּון after the verb קטּל.