What Luther did (or at least is credited with doing) on November 1st, 1517, changed the course of church history for Christianity. Luther, Zwingli and later Calvin didn't exactly change everything, as political considerations that kept them safe and able to preach and write had a strong effect on their interpretations of Christian life and sacraments. However, Luther's awareness that the "just are saved by faith" (Romans 1:17) changed the course of his life and millions to follow. All Christian churches that are neither Roman nor Orthodox owe their beginnings to the Protestant Reformation. So, in honor of their work, praise God for the movement led by Martin Luther!