**20:1 The role of these Quranic initials as components of the Quran's awesome mathematical miracle is given in detail in Appendix 1.
**20:15 The end of the world is given in the Quran, God's final message (15:87).
**20:54 Those who possess intelligence appreciate the fact that we are astronauts who were launched into space on this 'Spaceship Earth.' God provided us with renewable food, water, pets, wildlife, and livestock, as we embark on this temporary space odyssey. Compare God's provisions to 'Spaceship Earth' with the provisions we give to our astronauts (Appendix 7).
**20:115 When Satan challenged God's absolute authority (38:69), you and I did not make a firm stand against Satan. God is giving us a chance, on this earth, to redeem ourselves by denouncing Satan and upholding God's absolute authority (Appendix 7).