A 17th century illustration of Article VII: Of the Church from the Augsburg Confession, which states "...one holy Church is to continue forever. The Church is the congregation of saints, in which the Gospel is rightly taught and the Sacraments are rightly administered." Here the rock from Matthew 16:18 refers to the preaching and ministry of Jesus as the Christ, a view discussed at length in the 1537 Treatise.[15]