Bible Verse about Sin:
“Brothers and sisters, if someone is caught in a sin, you who live by the Spirit should restore that person gently. But watch yourselves, or you also may be tempted. Carry each other’s burdens, and in this way you will fulfill the law of Christ.”
No one can be pure without doing sin. When someone does a mistake and when you get hold of them, be gentle with them when you point out their mistake and also be careful not to be tempted. Care and comfort each other, as and when needed, as God cares for you.