At the time JC said that to Peter, Peter was a Jew.
At the time that Christ said that to Peter, Peter did not believe that Jesus was God? How do you know that?
Or maybe you're saying that at the time that Christ said that to Peter, Peter was not a disciple of Christ? That's another crazy suggestion.
At the time Christ said that to Peter, Peter was a Christian.
Something really bothers me that you do. You constantly refer to our Lord Jesus Christ as JC. I'm sorry, but I think that sounds disrespectful. Like He's your "homeboy" you are high fiving!