Shadrach, Meshach, and Abednego in the fiery furnace
Daniel's three friends refused to bow to Nebuchadnezzar's golden image; thrown into a blazing furnace, they walked unharmed with a fourth figure “like a son of the gods.”
If it happens, our God whom we serve is able to deliver us from the burning fiery furnace; and he will deliver us out of your hand, O king. But if not, let it be known to you, O king, that we will not serve your gods or worship the golden image which you have set up.
Daniel 3:17–18 (World English Bible)
Their answer to the king is one of the Bible's great statements of faith: God is able to deliver us, but even if he doesn't, we will not serve your gods. The furnace was heated seven times hotter, and the soldiers who threw them in died from the heat. The three came out without even the smell of smoke on them.
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Dating notes
Daniel 3 gives no year. Some ancient versions date it to Nebuchadnezzar's 18th year, around the fall of Jerusalem. The date shown is an estimate.