Matthew 7:26

Heareth these sayings... and doeth them not.

The hearer and non-doer is next described. He is likened to the foolish man who built his house on the sand. Everyone knows how transitory and shifting is. sandy foundation. Whole towns on the Missouri or lower Mississippi have been undermined and gone into the vortex because they were built upon the sand. The house built upon the sand is beat upon by the floods and rain; its foundation is moved by the waters; it falls and is borne along by the stream and destroyed. "So falls the sinner. The floods are wearing away his sandy foundation; soon one tremendous storm shall beat upon him, and he and his hopes shall fall, forever fall."-- Barnes.