An interesting post by Tim Keller in which he unpacks why Christians can live for long periods of time with serious character flaws being ignored and unacknowledged.
Our natural virtues, which come from inborn temperament and family nurture—such as our talents, aptitudes, and strengths—are good things. But they each have a dark side. People with prophetic gifts—that is, great directness, often good at public speaking or writing—can have problems listening to others and taking advice. People with priestly gifts—that is, sensitivity, often good at listening, giving counsel, showing mercy—often can be too concerned with making people happy. They may be cowardly, or overly sensitive to criticism. A person who is very generous may also be undisciplined and irresponsible in financial matters. Thus his generosity is really a facet of his too-impulsive character.
One of the reasons that the virtues of gifts and temperament have a corresponding “dark side” is that our gifts and natural temperament are bound up with the idols that dominate any heart not filled with the gospel of grace. Without a thorough knowledge of the gospel, we look to good things—human approval and relationships, the exercise of power and accomplishment, the control of our environment and self-discipline, the enjoyment of comfort, privacy, and pleasure—and make them into pseudo-salvations. So the person who makes an idol out of human approval may be a sensitive artist and the one who makes an idol out of power might be a courageous leader. But gifts and temperament in the service of idols—and this is our normal state—always are a mixed blessing. They have a good side—they produce virtuous behavior—but they lead the person into a corresponding sin or vice as well.
The final result of all this is that people cannot see their sins because they are looking only at their virtues. For example, someone may say: “I’m not abrasive, I just speak very directly.” It is true that a direct-speaking person may do good because direct, blunt comments are sometimes needed. But overall the abrasiveness is ineffective and the person’s boldness and confidence comes to some degree from pride and a lack of love. And for this reason, many (or perhaps most) Christians do not work on the supernatural graces of the spirit that are not natural to us, and that mitigate or eliminate the dark side—the besetting sins—of our nature.