If you were sitting today on a hillside listening to Jesus' Sermon on the Mount, how ought you respond? Become What You Are is the insider's guide to Jesus' agenda--the goal of spiritual formation. This goal is a transformed heart, a change at the inner center of our being, that leads to a life that pleases God. Or, as a shorthand, it means becoming like Christ. New Testament scholar William W. Klein presents the profound vision for spiritual formation that lies at the heart of the Sermon on the Mount.