This book views the triune God from a Pentecostal viewpoint. In so doing, it offers a fresh articulation of the theology of the Trinity that starts with Pentecost and with the Spirit. It concludes that the Trinity cannot be adequately appreciated using any single model–whether social, modal, or psychological. Instead, it presents three models–relational, instrumental, and substantial–that need to be held in paradoxical tension with one another. Of these, the relational is the foremost. Pentecost offers rich potential for seeing these relations between the Father, the Son, and the Spirit as a dynamic reciprocal dance in which each person empties self in order to exalt the other.