The church has been called to participate in God's mission in the world. But without a robust, biblical sense of the Spirit's action, how can we be sure we're fulfilling that call? Gary Tyra employs a biblical theology of the Holy Spirit to deepen and inform our understanding of life as the church, the people of God. Since the church's mission to and into the world is both evangelistic and prophetic, the task calls for the working of the Spirit in our preaching, proclamation and service. Tyra brings together both charismatic and evangelical emphases resulting in a theological and practical synthesis that is richer than when either is taken separately.