Inspiring Story

I heard an inspiring story on radio this morning.  It is a sermon message.
"I borrow a car from a friend for two weeks.  When it is time for a fill up, I go to the gas station and fill it up with diesel.  The hood says it's a diesel car.  The fuel door says it is a diesel car.  But the engine is a gasoline engine.  My friend converted the car into a gasoline powered car two weeks ago and forgot to tell me.  He has not removed the stickers saying 'Diesel'.  At the end I have the diesel pumped out from the car and there is little damage."
"We are all labeled 'human'.  However, after we have accepted Jesus Christ as Savior, we can not survive with the same food as before.  We need the high octane gasoline instead of the diesel."