That we should seek God's grace to correct ourselves, especially inwardly, before we try to correct others.
"If you want to help the Church, it is better to try to correct yourself; rather than be looking to correct others.
If you manage to correct yourself, one small part of the Church is immediately corrected. Naturally, if everyone did the same, the body of the Church would be in good health. But today, people concern themselves with nothing but themselves.
Judging others is easy; whereas working on yourself takes effort."