In three wideranging case studies, Garcia explores how union with Christ functions in Calvins thought. Garcia explains the way Calvin understands the apostle Paul to connect good works to eternal life in the context of union with Christ. He then turns his attention to the relationship of christology and pneumatology in sacramental union or communion with Christ. The third study investigates the role of Christ, the Spirit and the Eucharist in Calvins critique of Osianders views on justifying union with Christ.