John Piper's answer to David Wilkerson's Prophecy

You may or may not have heard about David Wilkerson's "urgent message" that he sent out a few days ago, warning of fire's & destuction in the in various places, specifically New York, New Jersey, Connecticut and "major cities all across America." John Piper gave an interesting response. Click the headline to link to it. http://www.desiringgod.org/Blog/1670_testing_david_wilkersons_prophecy/
David Wilkerson's original blog below:
http://davidwilkersontoday.blogspot.com/2009/03/urgent-message.html