What we need today is a critical mass of Spirit-empowered disciples from this generation-growing, multiplying, and changing the world for Jesus and the kingdom of God! This book presents a vision for discipleship, a philosophy of ministry, and a discussion of disciplemaking concepts and leadership priorities. Critical mass is the existence of sufficient momentum that becomes self-sustaining and fuels further growth. In a spiritual context, it involves the personal spiritual growth of individuals in all areas of maturity and corporate spiritual multiplication of the body of Christ through disciplemaking. These components-growing disciples, fruitful disciplemakers, and spiritual multiplication are the essential building blocks of the kingdom of God and the subject of this book.