The story is told of a certain African tribe that learned an easy way to capture ducks in a river. Catching their agile and wary dinner would be a feat indeed, so they formulated a plan.

The tribesmen learned to go upstream, place a pumpkin in the river, and let it slowly float down into the flock of ducks. At first, the cautious fowl would quack and fly away. After all, it wasn't ordinary for pumpkins to float down the river! But the persistent tribesmen would subsequently float another pumpkin into the re-gathered ducks. Again they would scatter, only to return after the strange sphere had passed. Again, the hungry hunters would float another pumpkin. This time the ducks would remain, with a cautious eye on the pumpkin, and with each successive passing, the ducks would become more comfortable, until they finally accepted the pumpkins as a normal part of life.

When the natives saw that the pumpkins no longer bothered the ducks, they hollowed out pumpkins, put them over their heads, and walked into the river. Meandering into the midst of the tolerant fowl, they pulled them down one at a time. Dinner? Roast duck.

Possible Preaching Angle: Wayne Cordeiro adds, "If we don't correct our hearts back to Jesus, it won't be long until we start tolerating "pumpkins." They have a seductive way of sneaking into [certain areas of our lives]. They creep in one by one until we sink beneath them and enter a watery grave."