The High Cost of Love
It must have stung Peter to have Jesus call him Satan, especially because Jesus had already chosen him to be the foundation rock of his community of believers. Peter, in his bullheadedness, seems a good stand-in for many of us, taking the heat for what we ourselves might have done or said (“What’s in it for us, Lord?”). Here he is merely expressing his care for Jesus by saying, as any of us would to someone we love, “God forbid that any tragedy should fall upon you.” Yet Jesus reprimands him because Peter cannot see beyond his desire to protect his Lord (and perhaps himself) from the terrible fate Jesus foresees. Peter does not yet see how great a cost a “wondrous love” will pay to accomplish good. Remember, by God’s standard no price is too high.
“Get behind me, Satan! You are setting your mind not on divine things but on human things.”