The good news of the Kingdom is quite simple. We’ve complicated it, or we’ve tried to reduce it to the wrong simple phrase. John’s gospel brings the simplicity of the proclamation of good news:
Now is the time for judgment of this world. Now this world’s ruler will be thrown out. (John 12:31)
The King has come. He wins. This is good news for those being set free (and realizing it). This is bad knows for the ruler of this world.
The implications of Jesus’ statement are far reaching and complex, but the good news? Simple.