It is horrible to hear about the concentration camps, but furnace have been around and a punishment as far back ancient Bible times. Daniel and his friends went into Babylonian captivity, while Daniel had to face lions, later on, his friends went to the fiery furnace.
Daniel, Hananiah, Mishael, and Azariah were of the tribe of Judah. The chief of the eunuchs gave them new names: Daniel he called Belteshazzar, Hananiah he called Shadrach, Mishael he called Meshach, and Azariah he called Abednego.
While Daniel had a different calling, his friends were set up as rulers over Babylon, but were denounced because they refused to worship the false gods, or the image of the king on the plain of Dura. They refused vehemently saying even if He didn’t deliver them, they would not bow, so Nebuchadnezzar ordered it made seven times hotter. And in they went. It was so hot it killed the men who put them in. The king got up and asked had they not put in three men, because he was seeing four.
Now, some translations say he says the fourth was like the son of the gods, KJV says son of God, which is accurate from the Hebrew, and they are not bound as before, burned, scorched, or singed. They did not even smell of smoke and as a non smoker that is something you pick up on clothes, especially.
Then he ordered that no one bother them or else trouble and praised the Most High God, El Elyon. So in this instance, I believe that this is Jesus appearing as the Angel of the Lord again. Daniel also sees Him, as a man clothed in linen.
Daniel has the gift of interpreting dreams, and he has visions. People still do, but as always I urge readers to use caution as to who teaches you, but to let the Holy Spirit guide you. Daniel is a prophetic book, and some of his writing ties to Revelation and ancient history.
We also know the king went mad, he was giving God some glory and then started taking credit, he was out of his mind and ate grass before being restored and later on Darius puts an older Daniel in the lion’s den. Rebecca Jones