Spiritual Warfare - A Christian's Rules for Warfare

Representatives of a New Cosmos
As Christians, our King, tells us that we are his Ambassadors, and therefore resident aliens in the societies in which we live. We are to be prepared, fully aware of the rules for spiritual warfare. It is our responsibility to live in this world and yet not be ‘of it,’ in our role of ambassadors to the world. Our mission is to stand for the truth of God as faithful representatives of God’s kingdom, that heavenly city that Abraham envisioned. We have been sent into this world order (cosmos), to prepare for another world order, that will be established when Christ, our King, returns. So what are Christ’s rules of spiritual warfare, that we should keep in mind at all times?