In the biblical book of Daniel, who are the three men thrown into the fiery furnace by King Nebuchadnezzar II?

In the Bible and its narrative, three Hebrew men (Shadrach, Meshach and Abednego) are thrown into a fiery furnace by Nebuchadnezzar II, King of Babylon, when they refuse to bow down to the king's image.

King Nebuchadnezzar had an enormous gold statue built, which he ordered everyone in the kingdom to worship. Shadrach, Meshach, and Abednego refused to follow the decree. Chaldeans brought this to the king’s attention. Nebuchadnezzar was infuriated, and immediately had the three men brought before him. After he asked them questions and got their answers, he had them sent into a fiery furnace.

Nebuchadnezzar could scarcely believe his eyes: there, in the flames, he saw four men walking around unharmed, one of which “looked like the son of God”. He opened the furnace and ordered them to come out, and when Shadrach, Meshach, and Abednego emerged from the furnace, it was clear “that the fire had no power over the bodies of these men; not a hair of their heads had been singed, nor were their garments altered; there was no smell of fire about them,” (Daniel 3:92-94).

Amazed at God’s deliverance, Nebuchadnezzar called the Lord blessed, and promoted Shadrach, Meshach, and Abednego. Nebuchadnezzar declared that all in the nation should worship the Lord, “For there is no other God who can rescue like this” (Daniel 3:96).