Throughout the movie, Master Shifu is so focused on achieving inner peace on his own that he completely ignores Master Oogway’s teachings to him. However, as he begins to remember his teachings while training Po, Shifu realizes that peace isn’t something that we can obtain on our own. We cannot find true peace by our own efforts. That is why Jesus says that he is giving us His peace – a peace that can’t be found anywhere else – because His peace is so much better than anything we can try and find on our own.