Author Dennis Rainey tells about an exercise he leads each year with his sixth grade Sunday School class. He divides the class into three groups.  These groups then compete in putting together a jigsaw puzzle. As these 12-year-olds scatter into three circles on the floor, he explains that there is only one rule in the competition: to put together the puzzle without talking.  The contents of puzzle number one are deposited on the floor and Group One immediately goes to work. The group promptly sets up the box top that depicts the picture of the puzzle it is completing.  Then Dennis Rainey moves to the second group, dumps the pieces of a second puzzle on the floor and quickly gives the group a box top. What the group doesn’t know is that the box top is for another puzzle!  The third group is…