Promise and Presence: An Exploration of Sacramental Theology - Paperbackby John E. Colwell (Author) John Colwell presents a robust sacramental theology for Protestant churches. He maintains that a doctrine of the Trinity leads us to conceive of God's gracious engagement with his creation as one that is mediated through that creation. And this lies at the foundation for an understanding of the sacraments. Colwell further argues that the Church and Scripture confer context, definition, and validity on all other sacramental