The term "Protestant" refers to a branch of Christianity that originated in the 16th century during the Reformation. This movement was initiated by figures like Martin Luther, who challenged certain practices and beliefs of the Roman Catholic Church. Protestants emphasize the authority of the Bible and the belief that salvation comes through faith in Jesus Christ, rather than through church rituals. Protestantism encompasses a wide variety of denominations, including Baptists, Methodists, and Lutherans. Each denomination has its own interpretations of scripture and practices, but they generally share core beliefs such as the priesthood of all believers and the importance of personal faith.