"Jesus told this parable to some who trusted in themselves, that they were righteous, and regarded others with contempt."
Person A - who was a religious, law-abiding person -- goes to the temple and prayed, "I thank you God, that I'm not like other people," especially not like sinners and tax collectors." Person A is our tendency to hold ourselves up as good examples by comparing ourselves to others.
Person B - a tax collector, and so probably someone who was thought of as corrupt, despised, and even a traitor - stands at a distance and says, "God, be merciful to me, a sinner." Person B is the grace you receive to judge only your self, and not to engage in comparison at all.
Guess who goes home "justified" (put right, made right) with God? (Hint: it's not us when we are being judgmental.)
As Oswald Chambers writes, Jesus w…