'Unharmed' in the Bible

He exclaimed, “Look! I see four men, not tied, walking around in the fire unharmed; and the fourth looks like a son of the gods.”

Once the satraps, prefects, governors, and ministers of the king had gathered around, they saw that those men were physically unharmed by the fire. The hair of their heads was not singed, nor were their trousers damaged. Not even the smell of fire was to be found on them!