19 Then was Nebuchadnezzar full of fury, and the form of his visage was changed against Shadrach, Meshach, and Abed-nego: [therefore] he spake, and commanded that they should heat the furnace seven times more than it was wont to be heated. 20 And he commanded certain mighty men that were in his army to bind Shadrach, Meshach, and Abed-nego, [and] to cast them into the burning fiery furnace. 21 Then these men were bound in their hosen, their tunics, and their mantles, and their [other] garments, and were cast into the midst of the burning fiery furnace. 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. 23 And these three men, Shadrach, Meshach, and Abed-nego, fell down bound into the midst of the burning fiery furnace. 24 Then Nebuchadnezzar the king was astonished, and rose up in haste: he spake and said unto his counsellors, Did not we cast three men bound into the midst of the fire? They answered and said unto the king, True, O king. 25 He answered and said, Lo, I see four men loose, walking in the midst of the fire, and they have no hurt; and the aspect of the fourth is like a son of the gods. 26 Then Nebuchadnezzar came near to the mouth of the burning fiery furnace: he spake and said, Shadrach, Meshach, and Abed-nego, ye servants of the Most High God, come forth, and come hither. Then Shadrach, Meshach, and Abed-nego came forth out of the midst of the fire. 27 And the satraps, the deputies, and the governors, and the king's counsellors, being gathered together, saw these men, that the fire had no power upon their bodies, nor was the hair of their head singed, neither were their hosen changed, nor had the smell of fire passed on them.

28 Nebuchadnezzar spake and said, Blessed be the God of Shadrach, Meshach, and Abed-nego, who hath sent his angel, and delivered his servants that trusted in him, and have changed the king's word, and have yielded their bodies, that they might not serve nor worship any god, except their own God. 29 Therefore I make a decree, that every people, nation, and language, which speak anything amiss against the God of Shadrach, Meshach, and Abed-nego, shall be cut in pieces, and their houses shall be made a dunghill; because there is no other god that is able to deliver after this sort. 30 Then the king promoted Shadrach, Meshach, and Abed-nego in the province of Babylon.

Matthew Henry's Commentary on Daniel 3:19-30

Commentary on Daniel 3:19-27

(Read Daniel 3:19-27)

Let Nebuchadnezzar heat his furnace as hot as he can, a few minutes will finish the torment of those cast into it; but hell-fire tortures, and yet does not kill. Those who worshipped the beast and his image, have no rest, no pause, no moment free from pain, Hebrews 12:29. Could we but see into the eternal world, we should behold the persecuted believer safe from the malice of his foes, while they are exposed to the wrath of God, and tormented in unquenchable fires.

Commentary on Daniel 3:28-30

(Read Daniel 3:28-30)

What God did for these his servants, would help to keep the Jews to their religion while in captivity, and to cure them of idolatry. The miracle brought deep convictions on Nebuchadnezzar. But no abiding change then took place in his conduct. He who preserved these pious Jews in the fiery furnace, is able to uphold us in the hour of temptation, and to keep us from falling into sin.