[RCL] Exodus 20:1-4, 7-9, 12-20; Psalm 19; Philippians 3:4b-14; Matthew 21:33-46 A great many preaching resources that reflect on today’s Gospel message seek to drive home the fact that this parable is an allegory—a parable or story with a moral or ethical message. The trouble, however, is that when many preachers see the word allegory,…