William Miller

William Miller was a 19th-century American preacher and the founder of the Millerite movement, which predicted the imminent Second Coming of Christ. His calculations led to the belief that Jesus would return on October 22, 1844. When this prophecy failed to materialize, it resulted in what is known as the 'Great Disappointment,' significantly impacting the religious landscape of the time and leading to the formation of several new religious movements, including the Seventh-day Adventist Church.