OK, so the various Popes, Martin Luther, etc., weren’t really Christians. They were bad people who gave Christians a bad name.
Got it.
Just honestly curious - how would you characterize Joseph Caiaphas? Didn’t he violate Jewish law to further his own ambition before the Jews, even in the face of contrary advice from some of the Sanhedrin?
What about the sons of Aaron, Nadab and Abihu, or the other spies besides Caleb and Joshua? Were they examples by which the faith of the Jews should be judged? The sons of Eli? King Saul? The list of the kings of Israel and Judah who “did evil in the sight of God”?
Or is the Jewish faith more accurately represented by Abraham, Moses, Joshua, Samuel, King David, Elijah and Elisha, Jeremiah and Nehemiah?
So it is with Christianity.
There are always those who will take upon themselves a cloak of faith, yet not be faithful to the creed they claim. There will be others, who are more weak than evil (Lot, for example) and stumble and fall in their service.
The Old Testament is full of examples of evil Jews and righteous Jews. Just as Christian history is replete with examples of evil and of piety.