How can the Christians preserve their callings and commitments today, experiencing while they do in an increasingly world-influenced society? How can they respond to God's calling in their lives and make a difference today? Every Christian is the agent of change. Christians are God's appointed watchmen. Revival has tarried today. For decades, religious revivals have considerably shaped Christianity. However, the present global churches and modern societies have steadily moved away from biblical teachings. We see false biblical teachers and teachings in every nation. We face the decline of Christianity. Yet, the word "decline" is no longer shocking to us because it happens everywhere now. Ignoring it is spiritual suicide. My goal is that Christian will be free from the Christlessness of this world and make a difference. By reading this book, you will realize God's calling for you as a watchman and will understand your duty for global Christianity.