The Protestant Church refers to a branch of Christianity that originated in the 16th century during the Reformation. This movement was initiated by figures like Martin Luther and John Calvin, who sought to reform the practices and beliefs of the Roman Catholic Church. Protestants emphasize the authority of the Bible and the importance of faith in Jesus Christ for salvation. Protestantism encompasses a wide variety of denominations, including Baptists, Methodists, and Lutherans. Each denomination has its own beliefs and practices, but they generally share core principles such as the priesthood of all believers and the significance of personal faith. The Protestant Church plays a significant role in global Christianity today.