The incident in the fiery furnace concerning Shadrach, Meshach and Abednego convinced Nebuchadnezzar that

The incident in the fiery furnace concerning Shadrach, Meshach and Abednego convinced Nebuchadnezzar that Yahweh is the only true God. When the three Jews refused to worship the golden statue, they were thrown into the fiery furnace, but they were miraculously saved by God. Nebuchadnezzar witnessed this miracle and saw that the God of the Jews was powerful enough to save them from certain death. As a result, he acknowledged the power and sovereignty of Yahweh as the only true God, and he made a decree that no one should speak against Him.