Who is the Holy Spirit and how does the Spirit come to be in relation to the Father and the Son? What is the mission of the Spirit and where does it come from? Chris Holmes takes up the questions surrounding the Spirit's procession and mission with the help of three of the church's greatest teachers--Augustine, Thomas Aquinas, and Karl Barth.

Drawing on their engagements with the Fourth Gospel, Holmes presents an account of the Spirit's identity, origin, and acts, to show how the acts of the Spirit derive from the Spirit's life in relation to Father and Son--and the extent to which...