The Aramaic noun nuwr means fire. It is the Aramaic equivalent of the Hebrew esh (H784) and appears prominently in the Aramaic portions of Daniel. Fire in these contexts represents both divine judgment and divine protection, depending on one's relationship with God.
The fiery furnace of Daniel 3 is one of the most dramatic episodes in the Old Testament. Nebuchadnezzar's furnace, heated seven times hotter than usual, could not harm Shadrach, Meshach, and Abednego. The fire that was meant to destroy them instead destroyed only their bonds. A fourth figure appeared in the flames — one like a son of the gods. This narrative powerfully demonstrates that God's presence transforms the instrument of judgment into a place of liberation.