This document tells a story using pictures and text to teach children about building one's life on solid foundations like Jesus' teachings, rather than on shifting sands. It discusses a real example of a home destroyed by a sinkhole after being deemed safe. The story contrasts two houses, one built on rock that remains standing when floodwaters come, while the other on sand is washed away. It relates this to Jesus' teaching about the importance of not just hearing his words but doing them, so that one's life is firmly grounded like a house built upon the rock.