Then Nabuchodonosor was filled with wrath, and the form of his countenance was changed toward Sedrach, Misach, and Abdenago: and he gave orders to heat the furnace seven times more than usual, until it should burn to the uttermost.
All Commentaries on Daniel 3:19 Go To Daniel 3
Hippolytus of Rome
AD 235
He bids the vast furnace be heated one seven times more, as if he were already overcome by them. In earthly things, then, the king was superior; but in faith toward God the three youths were superior. Tell me, Nebuchadnezzar, with what purpose you order them to be cast into the fire bound? Is it lest they might escape, if they should have their feet unbound, and thus be able to extinguish the fire? But you do not these things of yourself, but there is another who works these things by your means.