Family love—the Greek στοργή—receives adjectival form in this compound, with φίλος added for emphasis: tenderly devoted, affectionately attached. Romans 12:10 employs it in Paul's instruction on community life: 'Be devoted to one another in brotherly love.' The classical usage applied especially to parents and children, nurses and charges, suggesting instinctive, natural affection rather than chosen friendship. Paul transposes this into ecclesial life: treat fellow believers with the warm, protective devotion one gives blood relatives. The multilingual evidence (afectuosos, liebevoll, aimant-le-bien) emphasizes emotional warmth and tenderness.