2. We all make many mistakes. A person who never said anything wrong would be perfect. Someone like that would be able to control their whole body too.
3. We put bits into the mouths of horses to make them obey us. With these bits we can control their whole body.
4. It is the same with ships. A ship is very big, and it is pushed by strong winds. But a very small rudder controls that big ship. And the one who controls the rudder decides where the ship will go. It goes where he wants it to go.