We need more Christians who will lead lives of repentance, for repentance always challenges pride.
If you're coming to God daily to confess to him how much you have sinned, you will find it hard to pretend that you are holier than everybody else. You'll find it hard to put on airs, to pose as the perfect Christian.
When others accuse you of sin, you won't immediately jump to defend yourself, as if of course you could never do wrong and any accusation must be a misunderstanding. Rather, when someone accuses you of sin, you'll respond by thinking there is a high probability that the accusation is true, and you won't be embarrassed to say, "Oh, yes, I did do that. And I am terribly sorry. Will you forgive me?"
If we are able to humble ourselves before God, we will be humble before men as well. And the church will be far better if there are more of us who are like that.
Salvation Belongs to the Lord, (Phillipsburg, NJ: P&R, 2006), 199, paragraphing added.