Every so often, toward the end of a hot, still, muggy day here in the Midwest, we'll have a television show interrupted by an alarming beep and a printed message scrolling across the bottom of the screen. It's tornado season, and so the message usually features one of two words from the National Weather Service. It's either a "watch" or it's a "warning."  A tornado watch means that the atmospheric conditions are ripe for the development of a funnel cloud. A tornado warning, on the other hand, means that a funnel cloud has actually been sighted somewhere in the area. If the National Weather Service issues a watch, you are encouraged to be alert. If the National Weather Service issues a warning, however, you are instructed to take cover. 

Jesus has issued a warning. 

Jesus tells the story …