A chiasm is a literary structure where vocabulary of the first section of a passage is repeated in reverse order in the second. The center of the chiasm is typically the climax of the passage. In Luke 19:36-40 the center and climax is the “Palm Sunday” shout of the crowd, “Blessed is the King who comes in the name of the Lord; Peace in heaven and glory in the highest” (Luke 19:28b-d).