That very first sentence is a humdinger, isn't it?
The kingdom of God could be realized simply by daring to live differently from the normal conventions. The kingdom of God in the teachings of Jesus was not an apocalyptic or heavenly projection of otherworldly desire. It was driven by a desire to think that there must be a better way to live together than the present state of affairs. And it called for a change of behavior in the present on the part of individuals invested in the vision.