The doctrine of the kingdom of God is the heart of the earthly ministry of our Lord Jesus. He introduced it, emphasized it, preached and taught it, lived it and demonstrated it for all to see. He commissioned His disciples to go and preach the gospel of the kingdom. Yet the right understanding of the kingdom initially eluded the disciples. While Jesus was talking about the kingdom, the disciples were asking questions about political power. The same dilemma we see largely in the church of today. Too many church leaders are doing ministry without proper knowledge of the kingdom of God and they only understand it in the context of political power. The message and gospel of the kingdom is very scarce in our pulpits today. The more reason the church is floundering and true disciples are hard to come by in our society. Until every believer and church leader is soundly knowledgeable about the kingdom, many things will keep on going wrong in our lives and the church will become a laughing stock in our world. It is this knowledge that the author, Dr. Francis Bola Akin-John aims to disseminate to the body of Christ in this book. We must know that the kingdom has come and is still coming. Our heart cry everyday must be, LORD, let your kingdom come into our hearts, communities, nations and churches.