Lesson from Daniel chapter 3.

24 Then King Nebuchadnezzar was astonished and rose up in haste. He declared to his counselors, “Did we not cast three men bound into the fire?” They answered and said to the king, “True, O king.” 25 He answered and said, “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.”