A brother offended is harder to be won than a strong city: and contentions are like the bars of a castle.
All Commentaries on Proverbs 18:19 Go To Proverbs 18
Cyril of Alexandria
AD 444
Truly spiritual affection is a strong city not able to be overcome or besieged by the devil either by undermining or by scaling. For it does not give way to the siege machines of Satan because it is guarded by Christ, the Lord, by Christ who conquered the world and has prepared eternal blessings for you, by Christ, who said, “He who does not take up his cross and follow me is not worthy of me.”