5:8

provide for: That is, provide materially for. Paul shows that family heads were expected to provide for their spouse and children to the extent that circumstances allowed. Also, some widowed parents or grandparents were unable to care for their own physical needs. In that case, their adult children were to do what they could to provide for them. At times, this may have involved anticipating future needs and making arrangements for care of the older ones. (Compare Joh 19:26, 27.) Paul shows that in addition to feeling obligated, Christians have an even greater reason for applying this admonition, namely, to please God and receive his approval.​—Ex 20:12; De 5:16; Mt 15:4-6.

for those who are his own, and especially for those who are members of his household: Of these two expressions, “those who are his own” is broader in meaning, referring to close relatives. The phrase “those who are members of his household” in this context refers to the members of a person’s immediate family who live under the same roof as the householder.

he has disowned the faith: The Christian faith embodies all that Christ and his inspired disciples taught. Jesus reaffirmed God’s command to “honor your father and your mother,” and he condemned those who neglected this obligation. (Ex 20:12; De 5:16; Mr 7:9-13) So a Christian cannot live up to his faith without caring for his family, including widowed parents or grandparents. If he deliberately neglected this duty, he would be disowning the faith​—in effect, turning his back on it. He would be worse than a person without faith, that is, an unbeliever who may care for his family out of natural affection.​—Ro 2:14, 15.

a person without faith: Some translations of the Christian Greek Scriptures into Hebrew use the wording “a person who denies (disowns) Jehovah.” However, since there is no indication that the divine name was used in the original Greek text, the New World Bible Translation Committee did not use it in the main text of this verse.​—See App. C.