Lutheranism is a major branch of Western Christianity that identifies with the teachings of the sixteenth-century German reformer Martin Luther. Luther's efforts to reform the theology and practice of the Roman Catholic Church launched the Protestant Reformation and, though it was not his original intention, left Western Christianity divided. The split between Lutherans and the Roman Catholic Church arose mainly over the doctrine of justification before God. Specifically, Lutheranism advocates a doctrine of justification "by grace alone through faith alone because of Christ alone," distinct from the Roman Catholic view of works in addition to faith. Lutheranism is also distinct from the Reformed Churches, another major church which arose during the Reformation. Unlike the Reformed Churches, Lutherans have retained many of the sacramental understandings and liturgical practices of the pre-Reformation Church. Lutheran theology differs considerably from Reformed theology in its understanding of divine grace and predestination to eternity after death.