Have you ever played building a little tent or fort with pillows? It's fun because we feel protected inside, right? No monster can get in! The Bible says that when Dad, Mom, and you pray and obey God, it's like you're building really strong stone walls around your house.
The "fear of the Lord" (respecting God) is that strong wall. Even if it's raining outside, or there are problems, inside our house and our heart we have a warm and safe refuge.