The most famous example of calling out hypocrisy may be Jesus's "Thou hypocrite, first cast out the beam out of thine own eye; and then shalt thou see clearly to cast out the mote out of thy brother's eye." That's not addressed to a liar. That's addressed to someone who can't see what's blocking his vision. It's a description of someone suffering from cognitive dissonance, the conflict that comes from having irreconcilable beliefs and needs, a problem many people solve with hypocrisy.
The classic example: The fox wants the grapes, the fox can't get the grapes, the fox decides it doesn't want the grapes. It's easier for the fox to have a new belief than to live with the knowledge that what it wants is beyond its grasp. The fox isn't lying. The fox is deluding itself.
Though their actions may have horrible consequences, hypocrites deserve our pity. From The Psychology of Hypocrisy:
Hypocrisy is among the most universal and well-studied of psychological phenomena, and the research suggests that Craig, Haggard and the others may be guilty not so much of moral hypocrisy as moral weakness. The distinction may sound trivial at first, but as a society, we tend to forgive the weak and shun the hypocritical. As psychologists Jamie Barden of Howard University, Derek Rucker of Northwestern and Richard Petty of Ohio State have shown, we often use a simple temporal cue to distinguish between the weak and the hypocritical: if you say one thing and then do another, you are much less likely to be forgiven than if you do one thing and then say another. Barden, Rucker and Petty use this example: a radio host says on-air that he's joining a fitness organization but then eats pizza for a week and gains five pounds. Hypocrite! Now consider the reverse order: the host eats pizza for a week and then publicly joins a fitness group. "In each case," the psychologists wrote in a 2005 paper in the Personality and Social Psychology Bulletin, "the statements and behaviors are equally inconsistent." But we see something almost noble about the second scenario.Hypocrisy may be something the human brain simply does. From Our Brains are Wired for Hypocrisy: