In today's Gospel reading from Luke 5, Jesus said, "I have not come to call the righteous to repentance but sinners." Since God is holy, before him we are all sinners. To think about whether I am a bigger or lesser sinner than someone else is pointless. That's why God asks us not to judge anyone, and the saints consider themselves to be most wretched before God. What's important is that we realize our own sinfulness and repent to the Lord, then all our sins are forgiven!