Lutheranlık is a branch of Christianity that originated from the teachings of Martin Luther, a German monk and theologian, in the 16th century. It emphasizes justification by faith alone, the authority of Scripture, and the priesthood of all believers. Luther's 95 Theses, which criticized certain practices of the Catholic Church, sparked the Protestant Reformation. Lutheran churches are characterized by their liturgical worship and the sacraments of Baptism and Holy Communion. The movement has various denominations, including the Evangelical Lutheran Church in America and the Lutheran Church–Missouri Synod, each with its own interpretations and practices while maintaining core Lutheran beliefs.