A key refrain in Reformed theology is that God's Spirit trumpets the message of salvation through Jesus Christ into every nook and cranny of the universe—but how? And in what way does this cosmic truth touch and shape the mundane reality of our lives and our world? In this distillation of his Warfield Lectures, delivered at Princeton Theological Seminary in spring 2014, leading Reformed theologian Cornelis van der Kooi examines the relationship of the Holy Spirit to Jesus Christ. He demonstrates how a fuller understanding of the interplay between Christology and pneumatology can encourage the Christian church to have open eyes and ears for the inbreaking of God's "incredibly benevolent force" into the cosmological emptiness of today's world.