Religion is entrenched in the Nigerian culture, and worshippers constitute a major social group. The church now occupies an apex position in constructing social, economic, political and cultural frameworks for nation building. It is this expanded role of the church of Christ in society that this book seeks to codify as well as promote. In the over fifty chapters of this volume, authors examined the role of Christianity to the society; presenting reasoned arguments for its relevance and providing concrete evidence of its interventions in the society to prove its diverse and incalculable contributions to man and the nation. The book is divided into three parts: Part One presents canonical characteristics of the Archbishop Dr. Margaret Benson-Idahosa, who is the epitome of Christianity in this context, and in whose honour the book is written. In Part Two, there are 35 chapters that discuss the various applications of Christianity in the multifarious facets of the lives of people. In Part 3, 15 chapters portray the direct relationships of Christianity to the key sectors of society, namely: economy, health, education, international diplomacy, social change, science, and culture. The book is intended for the practitioners of Christianity, the teachers/researchers of the Christian religion in Nigeria, and it serves as a reference work for international researchers or Bible scholars.