This book widens the understanding of salvation from a narrow focus on the crucifixion of Jesus Christ to one which is inseparable from creation theology. In this analysis of the Thomist and Irenaean sources of Edward Schillebeeckx's creation faith, God's absolute saving presence to humanity is found to be intrinsic to his creative action. This becomes most explicit in God's humanity in the life, death and resurrection of Jesus Christ. Lewis argues that Jesus is both God's invitation to humanity and is himself the perfect human response to God. Because of this, Jesus' followers are called to be engaged in God's saving action, by working to remove suffering from people and to build a better world in which all may flourish.