Protestant churches are a branch of Christianity that originated in the 16th century during the Reformation, a movement aimed at reforming the practices and beliefs of the Roman Catholic Church. They emphasize the authority of the Bible and the importance of personal faith in Jesus Christ. There are many different denominations within Protestantism, including Baptists, Methodists, and Lutherans. Each denomination has its own beliefs and practices, but they generally share core principles such as salvation by faith alone and the priesthood of all believers. Protestant churches can be found worldwide, contributing to diverse worship styles and community activities.