Given his insistence on the dual temporal and spiritual spheres in which Christians live in the tension of freedom and service to others, Martin Luther's theological ethics prove paradoxical. This conundrum unfolds at the intersection of Luther's doctrine of justification and consequent Christian freedom (1520), and his doctrine of two kingdoms, which elucidates the complex world in which we live (1523). How is one to live in service to the neighbor as an unconditional subject, love enemies, and uphold justice? This article explores the New Finnish School interpretation of Luther's doctrine of justification as theosis in order to elucidate the Reformer's convoluted ethics. We may ultimately understand Luther's tensive position in terms of the believer's soul united to Christ, thereby becoming a Christ to others albeit, simul justus et peccator, imperfectly. This more fully accounts for Luther's appreciation for the ethical contingencies faced by Christians in everyday life.