Paul was discussing believing relatives, but parents who are not members of the Christian congregation should not be neglected. Exactly how children provide care varies.
فَمَا مِنْ حَالَةٍ شَبِيهَةٍ بِٱلْأُخْرَى ،‏ ذٰلِكَ أَنَّ حَاجَاتِ ٱلْأَشْخَاصِ ٱلْمَعْنِيِّينَ وَشَخْصِيَّاتِهِمْ وَصِحَّتَهُمْ تَتَبَايَنُ تَبَايُنًا شَاسِعًا .‏