The amazing fourth man

Daniel 3:19-30
The king’s command was so urgent and the furnace so hot that the flames of the fire killed the soldiers who took up Shadrach, Meshach and Abednego. These three men, firmly tied, fell into the blazing furnace. 
He said, “Look! I see four men walking around in the fire, unbound and unharmed, and the fourth looks like a son of the gods.”  
Then Nebuchadnezzar said, “Praise be to the God of Shadrach, Meshach and Abednego, who has sent his angel and rescued his servants! They trusted in him and defied the king’s command and were willing to give up their lives rather than serve or worship any god except their own God.  Therefore I decree that the people of any nation or language who say anything against the God of Shadrach, Meshach and Abednego be cut into pieces and their houses be turned into piles of rubble, for no other god can save in this way.” 
In the event, the flames kill those who fling them in, and burn through their own bonds; but they come out with not so much as a smell of burning about them. And a god-like figure walks through  the fire with them. Again the king is compelled to worship.
Why?
The Lord sent angel to save the life of these three men. And let the king realized the their God saved their life. He is the real God.
God's name be honored in foreign country, even his is the powerful king in the world. but the Lord is over his authority.
These three men even had not smell of fire so it is amazing.
Even we can not see the Lord, but God will save us in unseen feature.
How?
God is the living God, who protect us and saved us even we can't see where he is. God's power beyond king's. Praise be to the Lord!