The foolishness of building a house on sand is obvious. Unfortunately, the foolishness of building one’s life on the realities of this passing world is not as obvious. The house that is built on sand may even look the same as the one built on rock: perhaps the same materials were used, the same architecture, the same floor-plan. While the weather is good, it doesn’t seem to matter that one is built on sand and the other rock. People can build their lives the same way: they may have the same jobs, the same clothes, the same friends/activities. If they do not build their lives on Christ, however, when the storms of life come they will be utterly decimated.