After all, why is it than such an evil has become prevalent in today's society? No-one is admonished in private and more in order to bring them back to God, but the sins that were hidden are slanderously published abroad. Why? It is only because each one of us closes the door, having itching ears that cannot bear to hear the truth about ourselves.... Brotherhood cannot exist among us without such mutual correction, where we all willingly submit to one another.
John Calvin, Sermon on Galatians 6:1-2
And yes, he does go on to say how important it is to be humble in correcting others.