Rev. Dr. Peter A. Lillback is President and Professor of Historical Theology and Church History at Westminster Theological Seminary, a Presbyterian and Reformed Christian graduate educational institution in Glenside, Pennsylvania.He also serves as the president of the Providence Forum and a senior editor at Unio cum Christo: An International Journal of Reformed Theology and Life. Lillback has been ordained in the Orthodox Presbyterian Church (OPC), and holds his present credentials as teaching elder in the Presbyterian Church in America (PCA)