Orthodox Presbyterian Church of Korea
The OPCK system of doctrine is the Reformed faith, also called Calvinism. Since the establishment of the Presbyterian Church and Calvin's doctrines continued to develop after his death, and a particular evolution of them was set forth by a 17th-century assembly of British theologians in the Westminster Standards (which include the Westminster Confession of Faith and the Westminster Larger Catechism|Larger and Westminster Shorter Catechism|Shorter Catechisms). The OPC holds to the Westminster Standards with the American revisions of 1788.