The Pentecostal and Charismatic movements have assisted many denominations, including Lutherans, with the call to mission by challenging them with a new view of the Holy Spirit. A full immersion in these movements along with a firm grounding in the tradition will lead to a fuller grasp of what the Spirit is doing in the world. This article reviews two prominent Lutheran theologians who have shaped a whole generation of leaders concerning the Holy Spirit: Robert Jenson and Larry Christenson. In response to their work, I will explore how the work of the Spirit can be understood when framed within God's mission (the missio Dei). The call to mission is central. The church emerges as it engages in the missionary activity of witness and sanctification. This is the story of Acts. It is the story of the Spirit. The church's missionary call is to speak in tongues.