Daniel 3:19-20

19Then Nebuchadnezzar was even more angry with Shadrach, Meshach and Abednego. His face became red. He said to his servants, ‘Make the fire in the oven seven times hotter than usual.’

20He told the strongest men in his army, ‘Tie up Shadrach, Meshach and Abednego. Then throw them into the very hot fire!’