John 14:27 (KJV)
Jesus Kind of Peace
27 Peace I leave with you, my peace I give unto you: not as the world giveth, give I unto you. Let not your heart be troubled, neither let it be afraid.
St. Augustine said that Almighty God, you have made us for yourself, and our hearts are restless till they find their rest in you...C. S. Lewis said that God can't give us peace and happiness apart from Himself because there is no such thing...
The kind of peace that Jesus talks about is the type that St. Augustine and C. S. Lewis are talking about...Apart from God, there is no pure peace...