Synoptic Gospels texts of the three synoptic gospels often agree very closely in wording and order, both in quotations and in narration. Most scholars ascribe this to "documentary dependence", direct or indirect, meaning the close agreements among synoptic gospels are due to one gospel's drawing from the text of another, or from some written source that another gospel also drew from. The synoptic problem hinges on several interrelated points of controversy: Furthermore, some theories try to explain the relation of the synoptic gospels to John; to non-canonical gospels such as Thomas, Peter, and Egerton; to the Didache; and to lost documents such
Law and Gospel (Cranach) them with serpents; they need only look upon the serpent placed on a cross by Moses to be saved. Luther considered the story an example of faith and illustrative of Gospel. The mixture of Old and New Testament concerns in both halves of the panels illustrates that Gospel is not only found in the New Testament. For Luther and Cranach, artworks such as "Law and Gospel" were intended to instill understanding of scripture and Lutheran thought, and the images were deemed acceptable so long as they were subordinate to the written word. The role of these Reformation "Merkbilder" contrasted with