Ligonier Ministries is a Reformed international Christian organization headquartered in the greater Orlando, Florida area. Founded by R. C. Sproul in the Ligonier Valley, Pennsylvania outside of Pittsburgh over forty years ago, Ligonier's stated purpose is "to awaken as many people as possible to the holiness of God by proclaiming, teaching, and defending God’s holiness in all its fullness." Sproul and Ligonier are particularly known for their teaching of reformed theology, of which Calvinism is an important facet.