Soren Kierkegaard told this story:
Every Sunday the ducks waddle out of their houses and waddle down Main Street to their church. They waddle into the sanctuary and squat down in their proper pews. The duck choir waddles in and takes its place, then the duck minister come forward and open the duck Bible. He reads to them: “Ducks! God has given you wings! With wings you can fly! With wings you can mount up and soar like eagles. No walls can confine you! No fences can hold you! You have wings. God has given you wings and you can fly like birds!”
All the ducks shouted, “Amen!” As the ducks left the service they commented on what a wonderful sermon it was. And they all waddled home.
-Campolo, T. Adapted from Let Me Tell You a Story. Nashville, Tenn: Word, 3000, pp. 81-82.