Lk 18:9-10: "Jesus addressed this parable to those who were convinced of their own righteousness and looked down on everyone else. "
This is a very powerful lesson from Jesus Himself. He has jumped into the argument two millennia before many of us have either heard it or used it ourselves. We usually hear it when someone says, "Lord, you can take me now, I'm ready." Or as I have heard a few times before in my life, "My father died suddenly but he told me that he was saved, so I don't worry about him." Lately we hear declarations like, "I'm glad that I am a Christian (Catholic, Orthodox, Anglican, Lutheran, etc.) it sure is easier to get to heaven from here."