After Jon had eaten and gone back to his room,his mother took the rock back out.She knew Jon was a responsible boy,but she was worried that all the power would go to his head.
But she had a plan.She called John into the living room,and held out the stone.He reached to get it,but she closed her hand.
"You'll get it back.But not yet.I think we need some rules here.Some boundaries on what you can do with this stone.It's very dangerous.One wrong wish and who knows what could happen." she said.
His mother was quiet for a minute,before she said "Ok.First rule is......."