I have a book coming out in August 2013 with W. B. Eerdmans Publishing. Its title is: "Being Promised: Theology, Gift, and Practice."
This is the summary I wrote of it:
Promise is an underdeveloped metaphor for the Triune God's gracious actions in contemporary theology. Being Promised addresses this oversight by arguing that promise is itself a kind of gift exchange and analyzes the power, time, and liturgical place of the Triune God's promise. Gregory Walter offers a theological analysis of promise by using anthropological and phenomenological reflection on gift exchange to support his argument. Walter considers how the Spirit’s descent at Pentecost shows that God’s promise is a weak form of power and that promise enables Christian practice, the confrontation of impure giving and misrecognition. He concludes with an account of the Eucharist as the topology of promise, putting forward the ecclesiological and eschatological dimensions of promise. His argument begins with an analysis of the Hospitality of Sarah and Abraham to develop the phenomenon of promise as gift. No other book theologically examines promise and gift exchange as this one does.