A brother offended is harder to win than a strong city, and contentions are like the bars of a castle.
It is much easier to offend and to fight than to reconcile with a brother or sister or friend we have offended. The obvious lesson is to think before speaking and work hard to avoid offending in the first place.
But when we have caused offense, even though it is difficult, we should strive to rebuild the relationship. Recognizing the effort and the value of restoring relationships will encourage a long-term commitment to that challenging process.