Lutheran Christianity is a major branch of Protestantism that originated in the 16th century with the teachings of Martin Luther, a German monk. Luther's emphasis on salvation through faith alone, the authority of Scripture, and the priesthood of all believers set the foundation for this denomination. Lutherans celebrate two sacraments: Baptism and Holy Communion. They believe in the real presence of Christ in the Eucharist and practice a liturgical worship style. The Lutheran Church is known for its commitment to education, social justice, and community service, reflecting its core values of grace and love.