Vengeance is always wrong, regardless who was wronged or by how much:
Don’t seek revenge yourselves, beloved, but give place to God’s wrath. For it is written, “Vengeance belongs to me; I will repay, says the Lord.” – Paul in Romans 12:19
ONE Can Happen
Jesus prayed we'd be 'ONE' with each other in Him that the world will know! (John 17)
