Knowledge of their past was an indication of their future actions. And they did follow the same pattern. Profession does not equal possession. In light of the impending justice of God, I need to have faith - not only to exempt me from the judgment, but to believe that God is fair in his judgments. Trust God, He knows what He is doing.
Judgment is justified in the absence of faith.
Jesus is also preparing them for what is coming - his death. How can I minister to those at whom I am so angry for killing my Lord. That is why he follows this with a discussion on forgiveness. Click the above graphic to vote for thenGodsaid.