Great Commission Publications (GCP) is the joint publishing arm of the Orthodox Presbyterian Church and the Presbyterian Church in America. An ecumenical venture in the best sense of the term, GCP is overseen by the OPC Committee on Christian Education and the PCA Committee on Christian Education and Publications. GCP publishes a graded, biblically-faithful Sunday school curriculum, adult Bible studies, Trinity Hymnal (both original and revised), and other products. The GCP website offers convenient online ordering. To go to the GCP website, click here.