In Mark 8:31-33, we find the challenging story of Jesus outlining his agenda only to be challenged by Peter- a good and loyal follower of his Master. Jesus, though, calls out Peter as "Satan" for not sharing Jesus' perspective.
I wonder if the criticism being offered for what may appear to many conventional believers as activity that couldn't represent the heart of God is worthy of the same rebuke that Peter receives from Jesus. When people defend the institutional church instead of listening to what the Spirit is saying to the church, are they representing Satan- to use Jesus' label for a well intended disciple named Peter? When Christians take the position of hawks over doves, would they hear Jesus say that their minds are set not on the things of God, but the things of man? When believers judge the sexual activities of other humans thinking they represent God, are they perhaps simply not able to accept a message from the Master that is uncomfortable and therefore unacceptable? Maybe being "Satan" in Jesus' view is more about a closed minded and uninformed representation of what we have grown accustomed to in our religious practice of what we call Christianity than an overtly stated allegiance to the Anti-God. I'm guessing Peter was shocked at Jesus' rebuke and apparent horrific label, feeling that it wasn't deserved and even harsh. Yet, there it is for us to read and see if there is application in the story to contemporary practice by well intended disciples.