Martin Luther is often remembered for his doctrine of justification, yet his Christology remains comparatively underexplored. In this substantial contribution, one of today's leading Lutheran theologians demonstrates how Luther's understanding of Christ stands within, and creatively reforms, the Great Tradition.

Engaging themes such as Christ and the law, the hypostatic union, redemption, union with Christ, and the life of faith, Mark C. Mattes shows that, for Luther, the gospel is fundamentally promise rather than command. Through the "joyous exchange," believers receive Christ's righteousness while he bears their sin, securing their identity in God's love and freeing them for service. Christ meets his people in Word and sacrament, defends them from accusation, and conforms them to his image.

Highlighting the broad catholic dimensions of Luther's Christology and its significance for contemporary ecumenical discussion, this volume will benefit professors, students, and scholars seeking a richer account of Luther's Christ-centered vision for the life of the church.