This is really an extreme act. Through the Book of Daniel God has moved in a remarkable way to preserve the safety and security of the Jews, who had been taken out of Jerusalem and Judah, and are now living in various parts of the Babylonian Empire.
It is not enough for rebellious men to choose other gods to worship. They must also denigrate the true God, for they still feel the pressure of conscience condemning them for their idolatry, and must, as it were, return to silence that accusing voice.