Matthew 7:24-29
Therefore whosoever heareth these sayings of mine, and doeth them, I will liken him unto a wise man, which built his house upon a rock: And the rain descended, and the floods came, and the winds blew, and beat upon that house; and it fell not: for it was founded upon a rock. And every one that heareth these sayings of mine, and doeth them not, shall be likened unto a foolish man, which built his house upon the sand: And the rain descended, and the floods came, and the winds blew, and beat upon that house; and it fell: and great was the fall of it. And it came to pass, when Jesus had ended these sayings, the people were astonished at his doctrine: For he taught them as one having authority, and not as the scribes.
The guy that built his house on the sand probably thought it was going to be strong enough to last. But what happens though is that appearances can be deceiving. Only Christ is strong enough to stand on in the times of destruction. If we try to build our house on something other than the true rock, it will come tumbling down.