Exploring the role of the Holy Spirit in the evolutionary unfolding of the church throughout its history, distinguished theologian James Coriden skillfully articulates two principles: first, the Holy Spirit is the internal dynamic in the evolution of the church, the force that propels the Christian communities forward and in converging trajectories; and second, the reign of God, renamed here "God's project for the world," powerfully pulls the church's evolution forward. In the course of this book Coriden envisions changes, sometimes radical, in the church's structure, teaching, ministry, and sacraments. Here is a book that will be part of a sea change that already marks "the Francis revolution," which represents both challenge and renewal.