Protestant Christianity is a major branch of Christianity that originated in the 16th century during the Reformation. It began as a movement against certain practices and beliefs of the Roman Catholic Church, emphasizing the authority of the Bible and the importance of faith in Jesus Christ for salvation. Protestants believe in the priesthood of all believers, meaning that individuals can have a direct relationship with God without the need for a priest. There are many denominations within Protestantism, including Lutheranism, Baptism, and Methodism, each with its own interpretations and practices.