Shadrach, Meshach, and Abendego were thrown into the blazing furnace for not worshipping the golden image.  However, when the king looked into the furnace he beheld four men walking around in the fire describing the fourth as being like the Son of God.   Yes, the three men were unharmed in the midst of the fire because they were in the very presence of God.  Today, you and I can walk in a different kind of fire, the fire of the Holy Spirit.