For we dare not class ourselves or compare ourselves with those who commend themselves. But they, measuring themselves by themselves, and comparing themselves among themselves, are not wise.
The natural human tendency is to compare ourselves with others. If we are doing better—or think we are doing better—than someone else, we feel good about ourselves. But in reality, our standard is Jesus Christ, and when we compare ourselves with Him, we see how much we need His help (Ephesians 4:13-15).
The apostle Paul did not want to get into a comparison game with his detractors in Corinth. He pointed out that such comparisons are not wise.
For more about becoming more like Christ, see “Christ in Us: How Does He Live in You?”