"...amounts to an unforgivable sin."

I am sure you speak for yourself, 1Little Bear.  Well said.  I am  sure people like you  will continue to use a hatchet to remove the evil that some cleric-criminal has internalized, be he a bishop and priest. Fine. That is where you are at. There are only Blame-all and Praise-all clerics in your world. But for followers of  Christ, who try to be, no sin is unforgivable. "Forgive us our trespasses as we forgive those who trespass against us." Forgiveness is the core belief of Christ. One has to forgive today simply to make it as a Christian. I was abused sexually by a friend of my family, but I have forgiven that person. It has me a stronger within. The Gospel teaches us that to understand your abuser is to forgive her or him. I believe that.  When Dr. King says, "Throw us in jail and we shall still love you, bomb our homes and threaten our children, and we shall still love you," I believe that. One pardons in the degree or scope that one loves.