The Theology of the Cross is one of the core elements of Martin Luther's theology. The development of this doctrine through the Heidelberg Disputation has been considered an essential element of Luther's breakthrough on justification, and crucial to his theological reforms and future split with the Roman Catholic Church.

These statements by Luther, originally penned to be defended in debate, are counter-intuitive, contrary, offensive, and thrilling paradoxes, starting with the first and most astounding of them all: "The Law of God, the most salutary doctrine of life cannot advance humans on their way to righteousness, but rather hinders them." We hope the collection of interpretations that follow the theses in this book will help you to understand their impact.