You're right Busby:-
Furious with pride and rage, Nebuchadnezzar ordered the
furnace to be heated seven times hotter than normal. Shadrach, Meshach, and Abednego were bound and cast into the flames. The fiery blast was so hot it killed the soldiers who had escorted them.
But as King Nebuchadnezzar peered into the furnace, he marveled at what he saw: "But I see four men unbound, walking in the midst of the fire, and they are not hurt; and the appearance of the fourth is like a son of the gods." (Daniel 3:25