Why would people build a house without a foundation? Perhaps to save time and avoid the hard work of preparing a stone foundation. Possibly because the waterfront scenery is more attractive or because beach houses have higher social status than cliff houses. Perhaps because they want to join their friends who have already settled in sandy areas. Maybe because they haven't heard about the violent storms coming, or because they have discounted the reports, or for some reason think disaster can't happen to them. Whatever their reason, those with no foundation are shortsighted, and they will be sorry. When you find yourself listening but not obeying, what are your reasons?

-NIV

"But the one who hears my words and does not put them into practice is like a man who built a house on the ground without a foundation. The moment the torrent struck that house, it collapsed and it's destruction was complete"
Lk 6:49