If another believer sins against you, go privately and point out the offense. If the other person listens and confesses it, you have won that person back.
Moreover if thy brother shall trespass against thee, go and tell him his fault between thee and him alone: if he shall hear thee, thou hast gained thy brother.
If another member of the church sins against you, go and point out the fault when the two of you are alone. If the member listens to you, you have regained that one.
All Scripture is inspired by God and is useful to teach us what is true and to make us realize what is wrong in our lives. It corrects us when we are wrong and teaches us to do what is right. God uses it to prepare and equip his people to do every good work.