In a book entitled On Jews and Their Lies, reformer Martin Luther encouraged civic leaders to burn down Jewish synagogues, expel the Jewish people from their lands, and murder those who continued to practice their faith within Christian territory. “The rulers must act like a good physician who when gangrene has set in proceeds without mercy to cut, saw, and burn flesh, veins, bone, and marrow,” he wrote. Luther’s writings were later used by German officials as religious justification of the Holocaust. Lord, have mercy. Christ, have mercy.