Sinking Sand

Thinking about the physical foundations of the city of New Orleans got me to thinking about this spiritual parable the Lord told..

Luke 6:47 �Whosoever cometh to me, and heareth my sayings, and doeth them, I will shew you to whom he is like:
48 �He is like a man which built an house, and digged deep, and laid the foundation on a rock: and when the flood arose, the stream beat vehemently upon that house, and could not shake it: for it was founded upon a rock.
49 �But he that heareth, and doeth not, is like a man that without a foundation built an house upon the earth; against which the stream did beat vehemently, and immediately it fell; and the ruin of that house was great.