When Peter and John left the empty tomb of Jesus they each had different ideas of what had happened.  John says that he believed, but Luke tells us Peter walked away in wonder, trying to put the pieces together.  It wasn’t until later the light bulb came on and he understood exactly what had happened.  Just like Peter, we have times in our lives when we need a light bulb moment of clarity to help us refocus on God and remember what He has promised us.