What does Matthew 7:27 mean?

But if someone hears what I say and ignores it, they're like a person who built their house right on the sand. When the rain pours down, the river floods, and the wind slams against that house, it just collapses—completely destroyed. Matthew 7:27 - Modern Text Bible

(Jesus finishes his teaching by warning that ignoring his words leads to disaster, just like building a house with no foundation. The image is about real-life consequences, not just religious ideas.)