Martin Luther, the German theologian and reformer, sparked the Protestant Reformation and reshaped the course of Christianity. Born in 1483 in Eisleben, Germany, Luther’s bold challenge to the Catholic Church began in 1517 with his Ninety-Five Theses, questioning the practice of indulgences. This biography explores his role in translating the Bible into vernacular German, his theological writings that emphasized faith and grace, and his conflicts with religious authorities. Luther’s reforms revolutionized Christian worship and inspired the formation of Protestant denominations. This book highlights his courage, convictions, and legacy as a pivotal figure who transformed religion, education, and individual faith in the modern world.