Parables of Jesus the unforgiving servant, dealing with forgiveness; the parable of the Good Samaritan, dealing with practical love; and the parable of the Friend at Night, dealing with persistence in prayer. Of the thirty or so parables in the canonical Gospels, four were shown in medieval art almost to the exclusion of the others, but not mixed in with the narrative scenes of the "Life of Christ". These were: the Ten Virgins, the Rich man and Lazarus, the Prodigal Son and the Good Samaritan. Artists famous for depicting parables include Martin Schongauer, Pieter the Elder Bruegal and Albrecht Dürer. The Workers in
Parables of Jesus not felt that this was the kind of teaching best suited to our wants. In the 19th century, Lisco and Fairbairn stated that in the parables of Jesus, "the image borrowed from the visible world is accompanied by a truth from the invisible (spiritual) world" and that the parables of Jesus are not "mere similitudes which serve the purpose of illustration, but are internal analogies where nature becomes a witness for the spiritual world". Similarly, in the 20th century, calling a parable "an earthly story with a heavenly meaning", William Barclay states that the parables of Jesus use familiar examples