Many of us recognize the declining influence of the church today. And while we may be interested in doing something to reverse the trend, few of us realize we are part of the problem—especially when we engage the culture in ways that prevent the joy of God from being seen. Greg Forster comes to our aid by first laying out the historical factors that have contributed to the church’s loss of influence in our society today. He then explores the significance of foundational practices such as preaching, worship, and discipleship—showing how the Holy Spirit uses them to produce joy in us that changes our churches, families, offices, and communities. With contagious passion, Forster helps us understand the impact of Spirit-produced transformation, and encourages us to embrace God’s missional call to joyfully reach out to the world as the bride of Christ.