The three men had been tied up and thrown into a furnace of fire, but God sent an angel to preserve and deliver them from death. A dramatic and remarkable event, indeed. . Even if he doesn't. They had received no promise from God for deliverance. They were simply convinced about what was right and were willing to stand for the right rather than bow down to the Babylonian idols even if it meant for them a painful death.
Idols exist in abundance today in our own cultural environment.
The reverence and respect of the majority for the idols of today creates an intense pressure on us to conform to the common worship. For those who resist such worship, the cost can be high. It's not easy to stand against the idols of our society, especially when so many Christians are bowing down around us.